JPS6010348Y2 - Seedling vertical feeding device in rice transplanter - Google Patents

Description

[Detailed description of the invention] This invention is a rice transplanter that plants seedlings in a flooded field. It is related to the device.

In this type of seedling vertical feeding device, the seedling vertical feeding means that engages with the seedling mat on the seedling platform and vertically feeds the seedling mat during intermittent driving has a long length of the holding part for the seedling mat. As the speed increases, the effect of vertically feeding the seedlings during intermittent driving and the braking effect of preventing the seedling mat from slipping off and collapsing when not driven become greater.

In view of the above-mentioned facts, this invention aims to provide a novel seedling vertical feeding device for a rice transplanter, which is equipped with a seedling vertical feeding means that increases the length of engagement with the seedling mat without any inconvenience. .

Regarding the illustrated embodiment, the structure of the vertical seedling feeding device according to the invention will be explained. In FIG. A seedling stand 3 is a planting arm supported by the planting case 1.

A seedling platform 2, which is supported by left and right control handles 4 extending rearward and upward from the machine body so as to be able to reciprocate laterally, is provided so as to extend left and right from the planting case 1 and is movable laterally. By connecting the transverse feed shaft 5 and the seedling table 2 with a pair of left and right transverse feed arms 6, horizontal reciprocation is possible.

As usual, the planting arm 3 is moved up and down by the planting case 1, and is used to cut out individual seedlings from the seedling mat on the horizontally moving seedling platform 2 and plant them in the field. ing.

As for the seedling mat on the seedling platform 2, it is also customary to vertically feed it intermittently at each end of the horizontal movement of the seedling platform 2 in the left and right direction. A vertical feed rod 7, which is associated with the horizontal reciprocating drive mechanism of the seedling platform 2 and is intermittently driven forward and backward at each lateral movement end of the seedling platform 2, moves the seedling platform 2 from the side of the planting case 1. It is installed diagonally towards the lower surface of the lower end.

As shown in Fig. 2-4, the lower part of the seedling platform 2 in the inclined direction is approximately parallel to the vertical direction of the seedling platform 2, that is, in the direction of vertically feeding the seedlings in which the seedling mat on the seedling platform 2 is vertically fed. A suitable number of vertically long slit-shaped windows 8 are formed along the seedling table 2 intermittently in the horizontal direction.

The seedling vertical feeding means, which engages with the seedling mat on the seedling platform 2 and intermittently vertically feeds the seedling mat, is particularly designed to move the teeth of the seedling platform 2 through the window hole 8 from the bottom side of the seedling platform 2. 2. An appropriate number of racks 9 protrude from the top surface.

In the illustrated case, each rack 9 is formed with teeth 9a attached to both sides of its upper surface.

The rack 9 described above is supported as follows.

That is, as shown in Fig. 1.3.4, the upper end of each rack 9 is provided with a curved portion 9c that is curved away from the lower surface of the seedling stand 2, and is partitioned by vertical ribs 2a on both sides. A plurality of racks 9 belonging to each of the seedling loading compartments are arranged by providing a connecting rod 10 that connects the curved portions 90 along the lateral direction of the seedling loading platform 2 on the lower surface side of the seedling loading platform 2. 9 are connected to each other at the upper end side.

In addition, a bracket 11 that is appropriately inclined is placed on the lower surface of the seedling table 2 at a midway position in the vertical direction of the seedling table 2.
It is fixedly installed at the bottom side position and connects the connecting rod 1 mentioned above.
The upper end side of the rack 9 is supported by inserting and supporting both ends of the rack 9 into elongated holes 12 formed in the brackets 11 on both sides and the bearing plate 11a on the brackets 11.

On the other hand, on the lower surface of the lower end of each rack 9, there is provided a hanging part 9d that is oriented almost perpendicular to the surface of the seedling platform 2, and the plurality of racks 9 belonging to each seedling loading section are placed on the lower surface of the seedling platform 2. By providing a connecting rod 13 that connects the hanging parts 9d along the lateral direction of the seedling stand 2, they are connected to each other at the lower end side of the rack 9.

Further, on the lower surface of the lower end of the seedling platform 2, a bracket 14 that is oriented substantially perpendicular to the surface of the seedling platform 2 is fixedly installed at a position on the lower surface side of the vertical rib 2a, as clearly shown in FIG. A hexagonal vertical feed shaft 16 is provided along the lateral direction of the seedling stand 2, and is rotatably supported by a bearing 15 attached to the bracket 14.

Then, a pair of left and right U-shaped swinging arms 17 made of sheet metal are installed at the left and right end rack 9 positions on the lower surface side of each seedling loading section, and the swinging arms 17 are integrally moved as the vertical feed shaft 16 is rotated. A long hole 18 is formed in the swing arm 17, and the connecting rod 1 is inserted into the long hole 18.
3, the lower end side of the rack 9 is supported.

As shown in Fig. 1.3.4, a bracket 19 is fixed and vertically installed midway on the lower surface of the racks 9 on both sides belonging to each seedling compartment, and is attached to the lower surface of the seedling stand 2 at the upper end of the rack 9. A pair of left and right tension springs 20 having both ends attached to the provided brackets 11 and 19 are provided on the lower surface side of each seedling loading section, and the rack 9 is moved substantially upwardly on the slope of the seedling loading platform 2. It is a force.

Further, on the vertical feed shaft 16, a driven cam 21 shown in FIG. 1.4-6 is mounted at the center of the shaft 16.
It is provided so that it cannot rotate relative to the other.

As can be understood from FIG. 3, the tension spring 20 described above urges the vertical feed shaft 16 to rotate in the force direction of arrow A' in FIG. 3 via the connecting rod 13 and the swing arm 17. The driven cam 21 is in contact with the end face of the bracket 14 as shown by the chain line in FIG. 6 in the state shown in FIG. 3 to restrict rotational displacement of the vertical feed shaft 16 in the direction of arrow A. A stopper portion 21b is integrally provided to maintain the posture of the swing arm 18 as shown in FIG. 3.

In the state shown in FIG. 3, the posture of the swinging arm 17 is maintained as described above, and the force of the spring 20 is acting on the rack 9 almost in the upward direction of the slope of the seedling stand 2.
As shown, the upper and lower connecting rods 10.13 connecting the rack 9 are in contact with the upper end surfaces of the elongated holes 12.18.

In order to drive the rack 9 from the planting case 1 side, the first
As shown in the figure, a vertical feed drive shaft 22 is rotatably supported by the control handle 4 along the width direction of the seedling platform 2, and the end of a rotating arm 22a fixed to the vertical feed drive shaft 22 is The 7 ends of the feed rod are connected.

As shown in FIGS. 1 and 6, the vertical feed drive shaft 2
A pair of left and right drive cams 23 are provided which are fixed to the drive cam 2 and protrude toward the roller 21a at the end of the driven cam 21.

Each drive cam 23 is configured such that a driven cam 21 that reciprocates laterally together with the seedling platform 2 causes each driving cam 23 to
It is positioned so that it faces 3.

The drive cam 23 is driven by the rotational displacement of the vertical feed drive shaft 22 caused by the advance of the vertical feed rod 7 when the vertical feed rod 7 is moved forward and backward at each horizontal movement end of the seedling table 2 as described above. When the cam 23 is rotated from the posture shown by the chain line in FIG. 6 to the posture shown by the solid line, the driven cam 21
is pressed to rotate the cam 21 from the posture shown in chain lines to the posture shown in solid lines in FIG. It is configured to allow you to return to your normal posture.

At each lateral movement end of the seedling platform 2, the rack 9 is driven from the planting case 1 side so that the driven cam 21 is rotated from the posture shown by the chain line in FIG. 6 to the posture shown by the solid line as described above,
This rotational displacement of the vertical feed shaft 16 in the direction of arrow B causes the swing arm 17 to swing in the same direction, thereby vertically feeding the seedlings, and then, by the action of the tension spring 20, returning to the original position. What is returned is configured.

In order to guide and restrict the movement of the rack 9 that is displaced in this manner, a restriction plate 24 as described below is provided.

That is, the regulation plate 24 is constructed by bending the tongue-shaped cutout formed in the bracket 14 in the direction of the seedling loading section as shown in FIG. 5, as shown in FIG. It is formed into an arc shape centered on the axis,
These are provided at both ends of each connecting rod 13.

The regulating plate 24 is arranged in a manner that will be explained below along with the operation of the illustrated vertical seedling feeding device.

The swinging arm 17 is rotated by 60 degrees in the direction of arrow B from the posture shown by the solid line in FIG. The position 17 (II) shown by the chain line is reached in a, and at this time the lower end of the rack 9 is displaced downward along the direction of inclination of the seedling table 2.

The above-mentioned regulation plate 24 has an end supported in the elongated hole 18 of the swing arm 17 when the swing arm 17 is caused to swing slightly in the direction of arrow B from the position shown by the solid line in FIG. 8a. The end of the connecting rod 13 is lifted up on the upper surface of the regulating plate 24 as shown in FIG. When the swinging arm 17 finally swings to the position 17 (II) shown by the chain line in FIG. ing.

That is, since the above-mentioned tension spring 20 is provided and the rack 9 and the connecting rod 13 are biased to move in the upward direction of the slope of the seedling platform 2, when the swing arm 17 swings in the direction of arrow B, the From the time when the arm 17 assumes a posture perpendicular to the seedling stand 9 as in the posture 17(I) shown by the chain line in FIG. , the connecting rod 13 is kept in the elongated hole 18 while the swinging arm 17 is swung from the posture shown by the solid line to the posture 17 (II) shown by the chain line in FIG. The eighth
The lower end of the rack 9, which is displaced in the downward direction of the inclination of the seedling platform 2, from the position shown by the solid line in Figure a to the position 9 (■) shown in the chain line in FIG. It is designed so that it stands out.

When the lower end of the rack 9 is displaced as described above,
The upper end of the rack 9 is connected to the elongated hole 12 by the connecting rod 10 on the upper end side sliding down the elongated hole 12 of the bracket 11 and the bearing plate 11a from the upper end position to the lower end position shown in FIG. Performs guided displacement.

As shown in FIG. 3, the long hole 12 described above is arranged along a straight line S that is inclined at an angle of about 30 degrees with respect to the two surfaces of the seedling stand.
When the swinging arm 17 swings in the direction of mark B, the upper end of the rack 9 is displaced in the downward direction of the inclination of the seedling stand 2 while gradually moving its teeth toward the lower surface of the seedling stand 2.

The swinging arm 17 is in the posture 17 (■) shown by the chain line in FIG. 8a.
After the vertical feed rod 1 changes its movement to backward movement, the tension spring 2
0 will work as follows.

That is, the swinging arm posture 17 (shown by the chain line in FIG. 8a)
In II), since the connecting rod 13 comes off on the regulating plate 24, the rack 9 is moved almost upward in the direction of the slope of the seedling stand 2. The lower end of the rack 9 is slightly moved upward by the force of the tension spring 20. While being displaced, the connecting rod 13 falls into the elongated hole 18 to the lower end of the elongated hole 18, and first the eighth
The state shown in the figure is obtained.

Since the lower end of the rack 9 is displaced while the connecting rod 13 is guided by the elongated hole 18 in this way,
Depending on the amount of fall of the connecting rod 13 into the elongated hole 18, the lower end of the rack 9 is in a state where its teeth are almost recessed from the seedling mounting surface level L of the seedling mounting stand 2, as shown in FIG. I ended up taking it.

From the state shown in FIG. 8, the rack 9 is pulled up in the upward direction of the inclination of the seedling stand 2 by the force of the tension spring 20 while the swinging arm 17 swings in the direction of arrow A, and at this time the connecting rod The upward movement of the connecting rod 13 within the elongated hole 18 is prevented by the connecting rod 13 coming into contact with the lower surface of the regulating plate 24 .

Therefore, the lower end of the rack 9 is displaced in the upward direction of the inclination of the seedling platform 2 with its teeth substantially recessed from the seedling mounting surface level L, and is swayed as the lower end of the rack 9 is displaced. The movable arm 17 is swung from the posture shown in FIG. 8 to the posture shown in FIG. 8C, and in the state shown in FIG.

When the connecting rod 13 comes off the lower surface of the regulating plate 24 in this way, the biasing force of the tension spring 20 causes the connecting rod 13 at the lower end of the rack 9 to move upward within the elongated hole 18 while displacing the lower end of the rack 9. In this way, the lower end of the rack 9 is displaced while the connecting rod 13 is guided by the elongated hole 18, so that the lower end of the rack 9 is slightly tilted upward in the direction of the slope of the seedling stand 2. While being displaced, the tooth portion is moved so as to protrude from the seedling placement surface level L,
The state shown by the chain line in FIG. 8C, that is, the original state shown by the solid line in FIG. The stopper part 21b of the driven cam 21 is caused by the swinging of the swinging arm 17.
This state is fixed by coming into contact with the end surface of the bracket 14 as shown by the chain line in FIG.

When the lower end of the rack 9 is displaced as described above,
The upper end of the rack 9 is connected to the elongated hole by the connecting rod 14 on the upper end side rising inside the elongated hole 12 of the bracket 11 and the bearing plate 11a from the lower end position to the upper end position in the elongated hole 12. A displacement guided by 12 is performed.

Since the elongated hole 12 is aligned along the straight line S (as shown in FIG. While moving the seedling table 2, the seedling table 2 is displaced in an upward direction.

As described above, the rack 9 is driven from the planting case 1 side from the state shown by the solid line to the state 9 (■) shown by the chain line in FIG. As a result, a vertical feeding process for vertically feeding the seedling mat on the seedling table 2 is carried out, but the rack 9 shown by the chain line in FIG. 8a is used.
As described above, up to the lower end position 9 (■) of the rack 9
The teeth at the lower end of the rack 9 protrude beyond the seedling mounting surface level L of the seedling stand 2 to maintain engagement with the seedling mat, and the teeth at the upper end of the rack 9 are recessed from the level L as described above. However, until the middle of the above vertical feeding process, the level is L.
The rack 9 is located at a more protruding position and engages with the seedling mat, and as a whole, the engagement of the rack 9 with the seedling mat is maintained, and the required vertical feeding of the seedling mat is carried out.

To further analyze and explain the displacement of the rack 9 during the above-mentioned vertical feeding process, the displacement of the rack 9 is such that, at the lower end of the rack 9, the connecting rod 13 moves from point a to point b in FIG. This is done by moving linearly along the inclination direction, and at the upper end of the rack 9, as shown in FIG. 2. This is done by moving to the bottom side.

As shown in FIG.
1 and the movement Up of the point P mentioned above in the direction of the arrow S, that is, the direction tilted by an angle θ (θ1130°) with respect to the second surface of the seedling table, as shown by the arrow in FIG.
The lower side in the direction of inclination of the seedling stand 2 is moved in the direction where the angle of inclination from the seedling stand 2 is smaller, and the direction affected by U1 is greater, and the upper side in the direction of inclination of the seedling stand 2 is moved in the opposite direction. The influence of this will be large, and the inclination angle from the two sides of the seedling stand will be larger within the range of angle θ.

In this way, since the moving direction of each part of the rack 9 is determined, and because the engagement force with the seedling mat is gradually reduced on the upper side of the rack 9 due to the above-mentioned movement, it is possible to move the seedling mat vertically. The rack 9 is displaced in such a way that a large seedling mat feeding force is applied to the lower side when viewed in the direction in which the seedling table 2 is inclined.

As described above, the seedling vertical feeding device according to the present invention is such that the displacement of the rack 9 for vertically feeding the seedling mats is such that a large seedling mat feeding force is obtained on the downward side when viewed in the direction of inclination of the seedling table 2. The advantages of this configuration will be explained below.

First of all, contrary to the above, if a large seedling mat feeding force is applied to the upper side of the seedling table 2 when viewed from the inclination direction, an overfeeding phenomenon occurs in the upper side of the seedling mat, causing the seedlings to collapse. However, if this proposal is adopted, such collapse of seedlings will be surely prevented.

Second, in particular, when the seedling mat on the seedling platform 2 is used up and seedling succession is performed, a short seedling mat M□ is placed on the lower side of the slope of the seedling platform 2, as shown in FIG. Long seedling mat M,
are located on the upper side of the slope of the seedling table, even if the force for feeding the seedling mat in the longitudinal direction of the rack 9 is constant, the seedling mat M2 on the upper side has a large sliding force due to its own weight. Because of this, the feed tends to be excessive during vertical feeding, which tends to cause the seedling mat to turn over at the tip of the long seedling mat M2 and collapse the seedlings between floors. Since a larger forced feeding force is applied to the seedling mat M1, the occurrence of the above-mentioned inconveniences can be reliably prevented.

Next, to explain the action of returning the rack 9 to the original position of the illustrated vertical seedling feeding device, from the rack position 9 (■) indicated by the chain line in Fig. 8A to the rack indicated by the chain line in Fig. 8C. Seedling stand 2 tilt direction up to 9 positions.

The movement of the rack 9 seen in the direction is a movement in the upward direction of the slope of the seedling platform 2, and is a return process due to the force of the tension spring 20.

In this returning process, first, the connecting rod 13 on the lower end side of the rack 9 falls from the position 13 (If) shown by the chain line in FIG. 8a to the position shown in FIG. The toothed part of the rack 9 sinks almost to the level L of the seedling placement surface, and the attachment to the seedling mat is first released.
2. By being located at the lower end, the seedling mat is immersed and disengaged from the seedling mat.

From this state, the rack 9 is moved as shown in FIG.
7, the seedling platform 2 is tilted back upward to the position shown by the solid line, but at this time, the teeth at the lower end of rank 9 are recessed almost to the seedling placement level L as described above. maintained, not engaged with the seedling mat, and rack 9
The teeth on the upper end side gradually protrude and engage with the seedling mat, but as a whole, no engagement force is generated to overcome the own weight of the seedling mat, and from the above, the seedling mat does not hold the seedlings. The return movement of the rack 9 in the upward direction of the inclination of the seedling platform 2 can be obtained without the platform 2 being pushed upward in the inclination direction.

Finally, as the connecting rod 13 moves upward from the position shown by the solid line to the position shown by the chain line in FIG. The state is obtained.

As is clear from the above description, the seedling vertical feeding device in the rice transplanter of this invention has a seedling vertical feeding means that engages with the seedling mat on the seedling platform 2 and vertically feeds the seedling mat intermittently. The rack 9 is installed along the vertical feeding direction of the seedlings, and the lower end of the rack is aligned with the surface of the seedling table when the displacement of the rack 9 for vertically feeding the seedlings is seen in the direction of the slope of the seedling table. On the other hand, the top end of the rack is supported so as to be displaced from the seedling table surface in a slightly inclined direction in a direction substantially parallel to the surface of the seedling table, and the following effects are achieved.

In other words, the seedling vertical feeding device of this invention uses a rack having a large engagement length with the seedling mat as the seedling pine vertical feeding means, thereby increasing the effect of vertically feeding the seedlings when the seedling pine is vertically fed. However, since the rack 9 is supported so that the rack displacement when vertically feeding the seedling pine is carried out as described above, the lower end of the rack 9 is parallel to the surface of the seedling table when viewed in the direction of inclination of the seedling table. In this case, the upper end side will be displaced in a direction that is more inclined in the direction of recessing from the seedling table surface, and therefore the lower end side of the seedling table slope will be larger than the other side, and the upper end side of the seedling table slope will be displaced The vertical feeding force of the seedling mat is smaller than that of the seedling mat, and as mentioned in detail earlier, when the seedling mat is fed too much or the long seedling mat that has been spliced with seedlings, the seedlings may be This ensures smooth vertical feeding of seedlings to prevent collapse.

[Brief explanation of drawings]

Figure 1 is a side view of the main parts of a rice transplanter equipped with an embodiment of this invention, and Figure 2 is a partial plan view of only the main parts of the rice transplanter.
Figure 3 is a partially cutaway and partially cutaway side view of a portion of the rice transplanter, Figure 4 is a partial bottom view of only the main parts of the rice transplanter, and Figure 5 is a partial view of the main parts of the rice transplanter. Fig. 6 is a partially longitudinal side view of the main part of the same rice transplanter, Fig. 7 is a longitudinal side view of the main part of the same rice transplanter, and Fig. 8 a, b, and c are respectively the same implementation. FIG. 9 is a side view showing the movement of the main parts of the example, FIG. 9 is a schematic diagram showing the action, and FIG. 10 is a schematic side view showing the action. 2...Seedling stand, 8...Window hole, 9...
...Rack, 9a...Teeth, 9c...
Curved part, 9d... Drooping part, 10... Connection rod, 11... Bracket, 12...
...Elongated hole, 13...Connecting rod, 14...
...Bracket, 15...Bearing, 16...
...Vertical feed axis, 17... Swinging arm, 18...
...Elongated hole, 19...Bracket, 20...
...Tension spring, 21...Following arm, 21b...Part of stopper, 22...
Vertical feed drive shaft, 23... Drive cam, 24... Regulation plate.

Claims (1)

[Scope of utility model registration request] The seedling vertical feeding means, which engages with the seedling mat on the seedling table and intermittently vertically feeds the seedling mats, is installed in a rack installed along the vertical feeding direction of the seedlings. The displacement of the rack for vertical feeding of pine trees is such that the bottom end of the rack is almost parallel to the surface of the seedling table, and the top end of the rack is slightly inclined in the direction of recessing from the surface of the table. A vertical feeding device for seedlings in a rice transplanter, characterized in that the seedlings are supported so that the seedlings can be fed while being planted.