JPH0620371B2 - Rice planting equipment for rice transplanters - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling planting device of a rice transplanter for splitting seedlings from a seedling mat on a seedling table and planting them in a field. .

2. Description of the Related Art As shown in Japanese Patent Publication No. Sho 49-17808, a sun gear provided in a pawl transmission case, that is, a drive case,
Some drive a pawl shaft, that is, a cam shaft, via an intermediate gear and a planetary gear. Further, the mounting phase of the casing, that is, the planted claw case cannot be changed with respect to the drive case.

Problems to be Solved by the Invention With the above rice transplanters, the amount of seedlings cannot be adjusted. In addition, the movement locus of the planting nail cannot be adjusted according to the soil quality.

Therefore, the technical problem of the present invention is that the amount of seedlings taken by the planting nail can be adjusted, and the movement locus of the planting nail can be adjusted according to the soil quality, and the planting nail case can be easily made. In order to obtain a rice transplanter that can be positioned accurately and accurately, the technical means of the present invention for solving this technical problem is to fix a drive case to a transmission shaft to which power is transmitted from a power source, The drive case is provided with a cam shaft at a position distant from the shaft to which it is attached by an appropriate distance in the radial direction and at equal positions in the circumferential direction of rotation of the drive case. A rice transplanter in which a planting claw case supporting member adapted to rotate once in a direction opposite to the rotation direction during one rotation is fitted, and a planting claw case having a planting claw is attached to the planting claw case supporting member. At the planting nail case support member, And a base part of the planting claw case is rotatably attached to the flange part, and the planting claw base part is provided on the base part of the planting claw case and the flange part on a circumference around the cam shaft. Is a seedling planting device for a rice transplanter, in which a plurality of bolt holes for mounting the tongue are provided and the planting claw case is fastened from the case base side with mounting bolts.

EFFECTS OF THE INVENTION According to this technical means, the amount of seedlings taken out by the planting nail can be adjusted, and at the same time, the movement trajectory of the planting nail can be adjusted according to the soil condition. Also, a plurality of claws can be arranged in the same direction. Furthermore, the locus drawn by the planting claw is more curved on one side, and the other side draws a deformed elliptical closed loop curve closer to a straight line. When the phase of the sun rotation drive member is changed and the locus is changed in the vertical direction, by further adjusting the phase of the planting case with respect to the drive case, the locus according to the shape, method, and size of the planting claw. Or, the locus can be changed according to the condition of the field, and various planting claws can be attached with one drive case, and it can be used satisfactorily. Conventionally, a completely different device was attached to each nail. Therefore, there is a feature that the adaptability of planting is improved.

According to the present invention, however, in the rotary planting device as described above, the planting nail case supporting member is provided with a flange portion, the base portion of the planting nail case is rotatably attached to the flange portion, and the base portion of the planting nail case is provided. A plurality of bolt holes for attaching the planting claw case base to the flange are provided on the circumference of the flange part and the cam shaft, and the planting claw case is fastened from the case base side with mounting bolts. Therefore, the base of the planting claw case can be easily fixed to the flange with the mounting bolts, and the planting claw case bases can be mounted with the mounting bolts at a plurality of predetermined locations for accurate positioning. It can firmly support the attached nail case.

Example First, a description will be given of the entire rice transplanter for post-mounting.

Reference numeral (1) shown in FIGS. 28 and 29 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 body (1) has a mission case (5) attached to the rear portion of the body frame (4), an engine (6) mounted on the body frame (4), and an agenda (7) below it. .

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

There is an afterword (9) at the rear end of the transmission case (8). (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 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) with its mounting hardware.

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.

What is shown in FIGS. 1 to 13 is a forced pushing claw, 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 clutch unit clutch at one or more places per revolution.

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 member (25) includes a fan-shaped arm (25
There is a kerf (25c) on the end boss (25b) of (a), and a kerf (24a) that matches this kerf (25c) is provided on the sun gear (24) as shown in FIG. 25c) (24a) Change the matching position of each other, and insert 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). ) And fix it to the planted transmission case (20) by inserting the sun gear (2
The position relative to the planted transmission case (20) in 4) can be changed.

Although a plurality of cut grooves (25c) are shown in the drawing, they may be provided at one place because of phase matching. A hollow split drive case (28) is mounted on the end of the transmission shaft (23), and the position is adjusted in relation to the upper stop device of the planting pawl to drive the transmission shaft (23). The case (28) is attached and fixed to the transmission shaft (23) with bolts (29). The end of the transmission shaft (23) is formed into a square shape for position adjustment, and this is fitted in the square hole (28a) of the drive case (28).

The drive case (28) as a rotating body has a sun gear (24).
And an intermediate gear (3 that has the same number of teeth as the sun gear (24).
0) and (30) are rotatably provided through the intermediate shaft (31), and the intermediate gear (30) on the intermediate shaft (31) is always provided on the cam shaft (32) as the planting shaft. Sun gear (2
The planetary gear (33) having the same number of teeth as that of 4) is fitted through a supporting member described later.

Sun gear (24), intermediate gear (30), planetary gear (33)
Is a gear which is eccentrically dimensioned (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.

The member (34) is attached to the cam shaft (32) and fixed to the drive case (28) with a bolt (35). Then, the bolt (35) is inserted into the slit groove (36) provided in the member (34) so that the member (34) can rotate.

A support member (37) is fitted to the cam shaft (32) as shown in FIGS. 1 and 7, and the planting claw case (38) and the planetary gear (33) are fixed to the support member (37). Has been done.

By adjusting the position adjusting member (34) as described above, the ejection timing of the ejection claw is changed. (39) is the flange of the support member (37) that is the base (38a) of the planted nail case (38).
A bolt for fixing to (37a), which is inserted through the planting claw case and the bolt hole (60) of the flange (37a), and (40) is interposed between the support member (37) and the cam shaft (32). It is a bearing. 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 the intermediate shaft (57). There is a spring (43) at the intersection,
In contrast to this is the cushion rubber (44).

Therefore, the push arm (42) is biased by the spring (43) and is cushioned by the cushion rubber (44) with respect to the planting case (38).

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). To contact.

The upper surface of the tip end (42b) of the push arm (42) comes into contact with a washer (49) having a cross section, and the washer (49) has a spring (43).
Are in contact.

Also, the cushion rubber (4
4) is installed. Specifically, a cushion rubber (44) is fixed to an intermediate shaft (57) arranged in an L shape at the tip of the push arm (42), and the intermediate shaft (57) is connected via a 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 pushed by a push rod (47) driven by a push arm (42).

Now, when the drive case (28) as a rotating body rotates in the direction of arrow A as shown in FIG. 19 by the transmission shaft (23) which is its rotation shaft, the sun gear which cannot rotate with respect to the planted transmission case (20). The intermediate gear (30) that meshes with (24) is the drive case (2
Along with the rotation of 8), it rotates in the direction of arrow B by the same rotation angle as the rotation angle of the rotation.

The planting pawl case support member (37) which is interlocked with the intermediate gear (30) through the planetary gear (33) causes the intermediate gear (30) to rotate in the direction of arrow C, that is, in the direction opposite to the rotation direction of the drive case (28). Since it rotates to the drive shaft (2), the planting claw case ((38) as a planting rod is in the state of facing the seedling table.
3) as a center of rotation, and when the side facing the seedling mounting table (18) descends from top to bottom during this rotation, the seedling mounting is performed at the tip of the planting claw (45). After splitting only one seedling from the seedling mat on the stand (18), the seedlings are planted in the field at the lower limit of descending, and after that, the seeds rise above the field and the extruding claw (46) pushes the seedling at the time of planting. The seedlings will be removed from the planting claws as they are put out.

Next, the block claws shown in FIGS. 14 and 15 will be described. The configuration of the transmission shaft (23) for the planted transmission case (20), the configuration of the drive case (28), and the configuration of the cam shaft (32) are the same as the configurations of the forced extrusion claws, and therefore the same parts are designated by the same reference numerals. Is attached.

As for the structure of the planted claw case (38), the open / close rod (50) contacting the cam (41) is rotatable about an intermediate pivot point (51) as a fulcrum, and the open / close claw shaft (52) is rotated. It is adapted to drive the operating arm (53).

Therefore, the open / close claw (55) rotates with respect to the fixed claw (54) about the open / close claw shaft (52) to open and close the claw. The opening / closing timing of the block claw is adjusted by the adjusting member (34).

Now, again while the drive case (28) shown in FIG. 19 is rotating in the direction of arrow A, each of the planting claw cases (38) moves in the direction of arrow C,
That is, by rotating in the opposite direction to the rotation direction of the drive case (28), the cam (41) in each planting claw case (38).
When the tip of the claw (54) (55) enters the field scene at the planting position near the lower limit of lowering of the planting claw case (38) when the opening / closing rod (50) that contacts the Since it rotates, the opening / closing claw shaft (52) rotates via the actuating arm (53), and the opening / closing claw (55) separates from the fixed claw (54) to reliably plant seedlings in the field soil. Is.

By the way, as shown in FIG. 19, the sun gear (24), the intermediate gear (30), and the
Since each of the planetary gears (33) is configured as an eccentric gear that is eccentric by an amount e, the support member (37) revolves along with the rotation of the drive case (28) in the direction of the arrow A, and the support member ( 37) The rotation of itself in the C direction is due to the difference in meshing pitch radius with respect to the rotation axis in the meshing of the eccentric gears (24), (30), (30) and (33) during one rotation of the drive case (28). It is configured to be faster or slower than the rotation speed. Therefore, the time when the rotation of the planting claw case (38) in the C direction is delayed relative to the rotation of the drive case (28) descends from the seedling picking position so as to approach the field scene of the planting claw case (38). On the other hand, and on the other hand, the time when the rotation of the planting claw case (38) in the C direction becomes faster corresponds to the time when it rises from the planting position so as to approach the upper limit of the rise of the planting case (38). When set to, each planting claw case (38) is slower in the C direction than the rotation of the drive case (28) when it descends so as to approach the field scene, and the posture is lowered downward by the revolution while freely rotating slowly. Change, and when raising to approach the upper limit after planting, move slightly faster than the rotation of the drive case (28) in the C direction and rotate the posture arbitrarily to change the posture upward. The closed loop of trajectories is curved by one and It has an elliptical shape of the closed loop curve of polarization-shaped close to the straight line.

Now, as shown in FIG. 18, the axis locus (G) of the planted claw case support member (planetary gear) draws a circular motion, but its center (O).
A certain angle (AZ ₁ ) (AZ
_The straight line having ₂ ) is set as the reference line (K) (N) of the planting nail.

A straight line (P) having angles ADD ₁ and ADD ₂ centered on a point intersecting the locus (G) from each reference line (K) (N)
Assuming that the distance from the point (L) (M) on (Q) to each claw tip (S) (T) is RR ₁ and RR ₂ , each reference line and the gear inside the drive case are as shown in FIG. It is located at a position that almost coincides with the direction of maximum eccentricity.

Further, in the case of the block claw shown in FIG. 21 or FIG. 22, it is preferable that the closed loop curve is inclined as shown in FIG. 22 because the inclined posture is such that it is pressed against the side surface of the field when planting. Also, in the case of forced extrusion nails, seedlings are extruded forcibly at the time of planting, so the closed loop curve should be upright as shown in FIG.

Whether the closed loop curve is tilted or upright is performed by changing the phase of the sun gear with respect to the planting transmission case, in order to adapt the vertically moved trajectory to the seedling taking position and the planting position. In order to return it in the opposite vertical direction, the locus is changed and adjusted by changing the relative position of the planting claw case (38) with respect to the drive case (28) as shown in FIG. That is, when fixing the planting claw case to the planting claw case support member (37) with the bolts (39), the planting claw case (38) centered on the cam shaft (32) in advance as shown in FIG. 16 is used.
A plurality of bolt holes (60a) (60b) (60a ') (60b') with mounting phases are set on the circumference of the base part (38a) and the flange part (37a) of the bolt (39a). The mounting position of the planting claw case (38) with respect to the planting claw case support member (39) can be changed by changing the mounting phase of the planting claw case. A slit groove may be used instead of the bolt hole.

Further, the base portion (38a) of the planting claw case (38) as described above is provided at a position sliding on the drive case (28) side from the position where the tip planting claw is arranged. Therefore, since the tip of one of the planting claws can be passed by using this slide space, the planting claw can be formed long.

Thus, in FIGS. 21 and 22, the plot point (x) of the loop curve (X) and the plot point (g) of the eccentric locus (G) of the axis center of the planting claw case support member show corresponding positions. According to this, the speed is slow at the upper limit and the lower limit of the loop curve (X), and becomes faster at the rising and falling.

Further, in FIG. 21 and FIG. 22, the loop curve (X) is shown by the solid line, the alternate long and short dash line and the dotted line, but this shows the case where the phase in the eccentric direction of the sun gear is changed.

That is, as shown in FIG. 19, the phase position of the sun gear is set to D
When the displacement from the position to the E position in the direction opposite to the direction of rotation of the drive case by θ'changes the maximum eccentric position, the position of the reference line is changed and the planting locus is changed as shown by the dotted line in Fig. 20. The movement locus (X) before displacement of the movement locus of the planting nail shifts 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 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 trajectory 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, the reference line (N) described above in FIGS. 21 and 22.
All of (K) substantially coincide with the direction orthogonal to the line (W ₁ ) (W ₂ ) connecting the seedling picking position (a) and the planting position (b).

In other words, the reference line that maximizes the eccentric amount of the gear passing through the transmission shaft that is the input shaft is orthogonal to the line that connects the seedling picking position and the planting position regardless of the forced push claw or the block claw. In this way, the locus drawn by the planting nail is more curved on one side, and the other side has a deformed elliptical shape that is closer to a straight line and does not become a circle, so a compact locus can be obtained as a whole. There is a feature that the whole can be made compact.

Also, since the seedling picking position is on the descending side below the upper limit of the closed loop curve, proper seedling picking is performed by the planting claws, and the planting position is on the way down the lower limit of the closed loop curve. In any case, the portion close to the straight line in the locus can be used and the planting can be effectively performed.

Furthermore, since the planting pawl does not need to use a conventional planetary gear and has half the rotational speed, torque fluctuation is small.

Also, the above-mentioned planting claws of rice transplanters are curved by one side, and the other side draws a closed closed loop curve that is closer to a straight line. From Figures 20, 23, 24, and 25 As will be easily understood, by changing the phase of the planting claw case (38) with respect to the drive case (28) using the bolt holes (60a) (60b), as shown in FIGS. It is possible to draw a motion trajectory suitable for a forced push claw or a block claw. Specifically, since the mounting position of the planting claw case (38) is changed with respect to the support member (37), the phase can be varied around the cam shaft (32).

Therefore, the phase of the sun gear (24) is adjusted by the phase adjusting member (2
By changing in 5) and further changing the phase of the planted nail case (38), the locus of movement of the planted nail will change, so an optimal locus suitable for soil quality and nail can be obtained.

To change the phase of the planted nail case (38), use the support member (3
The seam (64) interposed between the flange part (37a) of 7) and the planting claw case (38) is the same as that shown in Fig. 27 (a).
It is necessary to change to the one shown in Fig. 27 (b). That is, since the mounting hole (65 has a long groove, it can move within the long groove (65) even if the insertion position of the bolt (39) changes.

In addition, the camshaft (32) (62) in FIG. 26 is driven by the drive case (28)
Hex nut for fixing to, and (63) shows the washer. Further, the drive case (28) is provided with a protrusion (66), and the groove (6) provided on the flange portion (37a) of the support member (37).
The grass is prevented from being wrapped by fitting it in 7).

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

Also, as shown in FIG. 30, punch marks (24a) on each gear
If the bolt mounting holes (60a) (60b) of the planted claw case are symmetrically provided with respect to (30a) (33a), the planted claw case will be assembled without fail after the gear is assembled in the drive case. Can be attached.

The symmetrical arrangement may be other than that shown.

In any of the above, the present invention provides a flange part (37a) in the planting claw case support member (37) in the rotary planting device, and the flange part (37a) has a base part (38a) of the planting claw case (38). A plurality of bolt holes (60a) for rotatably attaching the planting claw case base to the flange and the planting claw case base on the flange around the circumference of the cam shaft. (60b) (60a ′) (60b ″) are provided, and the planting claw case (38) is fastened to the planting claw case support member (37) with the mounting bolts (39) from its base side (38a). Since the bolts (39) are inserted from the base (38a) side of the planted claw case (38) and fixed, the planted claw case can be easily fixed with the bolts (39). ), And moreover, because it is fixed by using the bolt holes in which the mounting phase of the planting claw case is set in advance, accurate positioning can be facilitated easily. It can also be firmly supported planting claw case the flange portion.

[Brief description of drawings]

Fig. 1 is a plan view of the cutting for the forced extrusion claw. Fig. 2 is a side view of the same as above. Fig. 3 is a partially cut side view of the planting claw case for the forced extrusion claw. Fig. 4 (a) to (e) is forcible. Fig. 5 is a cutaway plan view of the planting claw case on the push-out claw, front view and side view of the relay fitting, and front view and side view of the cushion rubber. (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. FIG. 8 is a beveled view of the sun gear part. Such rear view 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 is a block claw FIG. 15 is a side view of the same as above. FIG. 16 is a side view of the planted nail case of the present invention. FIGS. 17 and 18 are explanatory views showing reference lines. Fig. 20 is an explanatory diagram showing the operating state of the gears of the drive case. Figs. 21 and 22 are diagrams showing the relationship between the cam shaft center locus and the closed loop curve. Figs. 23, 24, 25 are the drive case and the planting claw locus. Explanatory view showing the relationship FIG. 26 is a modified sectional view of the drive case portion. FIG. 27 (a) and (b) are plan views of the seam. FIGS. 28 and 29 are a front view and a plan view of the rice transplanter. FIG. 30 is an explanatory view showing the attachment of the planting claw case to the drive case. (18) …… Seedling stand (19) …… Float (20) …… Transmission case with plant (23) …… Transmission shaft (24) …… Sun gear (25) …… Sun gear phase adjustment member (28) ...... Driving 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 (38a) …… Plant claw case base (41) …… Cam (39) …… Mounting bolts (60a) (60b) …… Bolt holes (60a ′) (60b ′) …… Pivot

Claims (1)

[Claims] 1. A drive case is fixed to a transmission shaft to which power is transmitted from a power source, and the drive case is rotated at a position separated from the transmission shaft to which it is attached by an appropriate distance in the radial direction. A cam shaft is provided at equally-spaced portions in the circumferential direction, and a planting claw case supporting member is fitted on the cam shaft so as to rotate once in the direction opposite to the rotation direction during one rotation of the drive case. In a rice transplanter in which a planting claw case having a planting claw is attached to a planting claw case supporting member, a flange is provided on the planting claw case supporting member, and the base of the planting claw case is rotated on the flange. Freely attach, and provide a plurality of bolt holes for attaching the base of the planting pawl case to the flange on the circumference of the base of the planting pawl case and the flange around the cam shaft. Fastened the nail case with planting from the case base side Seedling planting apparatus of the planting machine.