JPH0787729B2 - Rice planting equipment for rice transplanters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a rice transplanter, which is a rice transplanter for dividing seedlings from a seedling mat on a seedling mounting table into individual seedlings and then planting the seedlings in a field. It is about.

[Conventional technology]

A conventional seedling planting device of this type is, for example, as described in Japanese Patent Publication No. Sho 49-27762, while connecting the base end of a planting rod having a split claw at the tip to the machine side through a fan ring. , The middle part of the planting rod is pivotally attached to the tip of a crank fixed to a claw shaft that is rotationally driven by an engine, and the rotation of the crank causes the planting rod to draw a closed loop trajectory at the tip of the split claw. It was to swing up and down.

However, in this conventional vertical rocking type seedling planting device, the dividing claws attached to the planting rod are oriented in the direction of the seedling mounting table as compared with the rotary type device described in, for example, Japanese Utility Model Publication No. 33-18922. Since it moves up and down while keeping the posture facing, the seedling taken out from the seedling mounting table with the dividing claw can be planted almost vertically in the field scene, but compared to the rotary type, the planting rod is more vigorous. Vibration is generated due to the vertical rocking, and this vibration increases in proportion to the speed of the vertical vibration, and this vibration occurs once per vertical rocking, that is, once per one crank rotation. Only the rice field could be planted, so the planting speed could not be increased.

Therefore, the inventor of the present invention applied the above patent application (Japanese Patent Application No. 58-175091).
No.) based on the rotary type, the tip of the split claw on the plurality of planting rods attached to the rotary body is configured to rotate vertically with the posture facing the seedling mounting table. Proposed a seedling planting device that has the features of both a rotary type and a vertical swing type planting device.

[Problems to be solved by the invention]

By the way, there are various conditions of soil in the field, such as hard and soft conditions. For example, if a seedling sandwiched between split nails is planted by pushing it into a hard soil, the soil will not come to the marks of the split nails, resulting in a floating seedling.

On the other hand, in the case of very soft soil, the roots of the seedlings planted there are not yet firmly supported by the surrounding soft soil, so the flow of mud discharged by the float of the rice transplanter Depending on the effect, it may be pushed down or tilted. Therefore, in any case, there are problems such as poor viability of the planted seedlings and poor growth.

In particular, in the latter rotary type seedling planting device, since the planting speed of the seedlings in the field is much faster than that in the former vertical swing type seedling planting device, the occurrence of floating seedlings or poor growth is more remarkable. It happened to.

An object of the present invention is to solve the conventional problems existing in rice planting work in both the rotary type seedling planting apparatus and the vertical swing type seedling planting apparatus.

[Means for solving problems]

In order to achieve this object, the present invention provides: “A planting rod is provided in a machine near a rear part of a seedling stand of a rice transplanter so as to swing up and down by power transmission from a power source. Vertical rocking type seedling planting device that is provided with split claws extending in the direction of the platform. ”Or“ Rotary body that is rotationally driven by power transmission from the power source to the machine near the rear of the seedling platform of the rice transplanter. Is mounted with its axis of rotation substantially horizontal, and is attached to the rotating body at a position distant from the center of rotation by an appropriate distance in the radial direction and at equal positions in the circumferential direction of rotation of the rotating body. A planting shaft, which is adapted to rotate once in a direction opposite to its rotating direction during rotation, is axially supported parallel to the rotation axis, and each planting shaft is provided with a split claw extending in the direction of the seedling table. "Rotary-type seedling planting device that is equipped with each of the above." Arrangement of a vertical movement type cultivation soil for cultivating seedlings after planting with the dividing claws in the planting rod, at a site rearward from the position where the seedlings are planted in the running direction. I will do it. "

[Action]

With this configuration, when the rice transplanter is running, for a field scene, seedlings are first planted by the split claws of the planting rod by the operation of the planting rod in the planting device,
Next, the planted seedlings will be cultivated in a vertically movable cultivating pit for cultivating soil, which is located behind the planting rod.

By the way, the seedlings planted in the field scene, when cultivated in the soil for cultivating soil, at the same time as or approximately at the same time as the planting of the seedlings by the split claws in the planting rod, when configured to perform cultivating soil by the soil for cultivation Is the divided claws and the cultivating soil 箆, in a state of being close to each other, when rising from the field scene at the same time or substantially at the same time, because a large amount of soil will be lifted together with the divided claws and the cultivating soil 箆, Since it is not possible to sufficiently obtain the effect of cultivating soil with the above-mentioned soil for cultivation, especially in the case of a rotary type seedling plant, due to the high planting speed of seedlings for the field scene, the effect of cultivating soil due to the above-mentioned soil for cultivation. However, it was further diminished.

On the other hand, the present invention, as described above, the seedlings planted with the split claws in the planting rod, in the soil for cultivating soil arranged in a region rearward of the planting rod, with respect to the seedlings after the planting. Since the soil is cultivated, it does not cause a large amount of lifting to the soil unlike when the split claw and the soil for cultivating soil are raised from the field scene at the same time or substantially at the same time in a state where they are close to each other.

〔The invention's effect〕

Therefore, according to the present invention, when planting seedlings with a vertical rocking type seedling planting apparatus or a rotary type seedling planting apparatus,
Soil can be surely cultivated for the planted seedlings, which has the effect of significantly reducing the occurrence of floating seedlings and poor growth.

〔Example〕

Hereinafter, the present invention will be described with reference to the drawings of the embodiments. In the drawings, reference numeral 1 is a transmission case in the body of a rice transplanter, and 10
Indicates a seedling mounting table, and the machine body advances in the direction of the arrow in FIG.

On the side surface of the transmission case 1, the boss body 2 is located horizontally behind the seedling placing table 10 in a horizontal direction and substantially parallel to the seedling placing table 10.
In other words, the boss 2 protrudes in the left-right direction substantially perpendicular to the traveling direction of the airframe, and is rotated in the boss body 2 by the power transmission from the engine (not shown) mounted on the airframe of the rice transplanter. Is inserted into the protruding end of the rotary shaft 3 from the boss body 2, and an oval-shaped and hollow rotary body 4 is fitted therein.
The rotator 4 is configured to rotate in the right direction of arrow A in a side view. The center of the rotary body 4 is rotatably fitted to the boss body 2 and is rotatable.
A sun gear 5 that is configured to be rotatable with respect to the sun gear 5 is disposed so as to be non-rotatable with respect to the transmission case 1 by an appropriate rotation phase adjusting means (not shown). .

On both left and right ends of the rotating body 4, a cam shaft 6 is axially supported in parallel with the rotating shaft 3 and non-rotatably with respect to the rotating body 4, at positions where the distance (L) from the rotating shaft 3 is equal. A hollow planting shaft 7 is rotatably fitted onto the cam shaft 6, one end of the planting shaft 7 is projected to the outside of the rotating body 4, and the seedling table is provided at the projecting end of each planting shaft 7. A hollow planting rod 8 having a split claw 9 extending toward 10 is attached at its base, while the rotary body 4 has an intermediate position at an intermediate position between the rotary shaft 3 and each planting shaft 7. A shaft 11 is rotatably supported in parallel with both shafts, and an intermediate gear 12 meshing with the sun gear 5 and having the same number of teeth as the sun gear 5 is fitted on each intermediate shaft 11.

The interlocking gear 13 having the same number of teeth as the intermediate gear 12 is fitted on the intermediate shaft 11, while the interlocking gear 13 on the intermediate shaft 11 has the same number of teeth as the interlocking gear 13 on the planting shaft 7. By interlocking the interlocking gear 14 that constantly meshes with this, and interlockingly connecting the intermediate shaft 11 and the planting shaft 7 with the interlocking gears 13 and 14, the planting shaft 7 rotates by one rotation of the rotating body 4. It is configured to rotate once in the direction opposite to the rotation direction of the body 4.

On the other hand, one end of the cam shaft 6 is inserted into each of the hollow planting rods 8 and a cam 15 is fixed thereto, and each planting rod 8 has a guide shaft 16 extending substantially parallel to the split claw 9. Is provided so as to be slidable up and down, an extruding tool 17 is fixed to the lower end of the guide shaft 16, and an extruding lever 18 is provided in each planting rod 8.
And one end of which is engaged with the slider at the upper end of the guide shaft 16, while the base end of the pushing lever 18 is pivotally attached to the pin 20 at a position above the cam shaft 6, When a protrusion protruding from the lower surface of the lever 18 is brought into contact with the outer peripheral surface of the cam 15 by pressing a spring, and the outer peripheral surface of the cam 15 comes close to the lower limit of lowering of the planting rods 8. only,
The pushing lever 18 is configured to rotate downward by the spring force.

Then, on the lower surface near the base in the case of each of the planting rods 8, the base of the cultivation soil 21 is detachably fixed with a bolt or the like, and the free end of the cultivation soil 21 is set in the direction opposite to the traveling direction of the machine body. Extending backward and downward, the grounding portion 22 of each cultivation soil 21 has a seedling planting line formed by the split claws 9 of each planting rod 8.
It is configured so that it touches the field 25 at a position that is deviated to the right or left with respect to 23 by an appropriate dimension (by l1).

In this configuration, when the rotating body 4 revolves in the right direction of the arrow A by the rotating shaft 3 thereof, the intermediate gear 12 meshing with the sun gear 5 that cannot rotate with respect to the transmission case 1 revolves with the revolution of the rotating body 4. , The rotation angle of the revolution is the same as the rotation angle in the right direction of arrow B.
The planting shaft 7 that is interlocked via 3, 14 rotates on the left side of the arrow C, that is, in the direction opposite to the revolving direction of the rotating body 4 by the rotation of the intermediate gear 12, and therefore the planting rod 8 attached to the planting shaft 7 is attached. Means that the split claw 9 turns about the rotary shaft 3 with the split claw 9 facing the seedling placing table 10 as shown in FIG. Ten
When descending the side facing the bottom from the top, one seedling was split from the seedling mat on the seedling mounting table 10 at the tip of the split claw 9 and then seedlings were set in the field scene 25 near the lower limit of the fall. Planted and then rise above field 25.

While the rotary body 4 revolves in the right direction of the arrow A,
By pushing each planting rod 8 with respect to the cam shaft 6 in the left direction of the arrow C, that is, in the direction opposite to the revolving direction of the rotating body 4, the pushing lever that contacts the cam 15 of the cam shaft 6 in each planting rod 8. When the tip of the split claw 9 enters the field scene 25 at the lower limit of lowering of the planting rod 8, the spring 18 is rotated downward by a spring based on the shape of the cam 15, so that the pushing lever 18 is directed downward. Pusher at the lower end of the guide shaft 16 by rotation
17 moves downward toward the tip of the split claw 9 and pushes the seedling into the field 25 for planting. When the pushing and planting is finished, the pushing tool 17 returns to the original position retracted from the tip of the split claw 9 almost at the same time when the split claw 9 rises from the field scene 25.

In this way, the front-rear spacing (l2) between the seedling 26a planted in the field 25 by one preceding planting rod 8 and the seedling 26b planted by the succeeding planting rod 8 is
It is determined by the relative relationship between the forward speed of the machine body and the revolution speed of the rotating body 4. At this time, when the following planting rod 8 descends, the seedlings 26b are pushed by the split claws 9 on the front side of the planting rod 8 while the rearing lower surface of the planting rod 8 for cultivation soil.
21 comes down to the seedling 26a already planted from the front upper side thereof and descends, and as shown by the two-dot chain line in FIG. 2, the grounding portion 22 of this cultivation soil 21 is located on the right or left side of the seedling 26a. After the soil is pushed and cultivated, the cultivation soil 21 is also separated from the field scene in accordance with the rise of the planting rod 8 accompanying the revolution of the rotating body 4.

The grounding portion 22 of the cultivation soil 21 is a seedling planting line 23.
It may be on either the right side or the left side with respect to, and the left and right bifurcated grounding portions 22 and 24 may be projected rearward and downward, as shown by the chain double-dashed line in FIG.

According to the present invention, as in the above-described embodiment, the pushing tool 17 is attached to the planting rod 8.
In addition to those equipped with, one or both of a pair of left and right split claws 9 can be opened and closed left and right, and when the seedlings are divided from the seedling mounting table 10 and descended, the seedlings are clamped from the left and right, and both claws are provided at the lower end of the descending. It goes without saying that the present invention can also be applied to a so-called block claw structure configured to open.

In addition, the interlocking gears 13 and 14 having the same number of teeth that interlock the intermediate shaft 11 and the planting shaft 7, and the center (O) of each of these gears is appropriately dimensioned from the rotation center of each of the shafts 11 and 7 (e. ) Is configured as an eccentric gear, the rotation of the planting shaft 7 to the left along with the revolution of the rotating body 4 to the right, the eccentric type interlocking gear 13 is rotated during one rotation. Since the rotation speed of the rotating body 4 becomes faster or slower due to the diameter difference of 14 and 14, the rotation of the planting shaft 7 to the left becomes slower than the revolution of the rotating body 4. However, when the planting rod 8 descends so as to approach the field scene 15 of the planting rod 8, the time when the planting shaft 7 rotates to the left quickly corresponds to the time when the planting rod 8 rises to approach the upper limit of rise. By setting so that each planting rod 8 is a rotating body when descending so as to approach the farm scene 25. Since the rotation of the rotor 4 changes to the left and the posture changes downward, and when the approaching upper limit is reached, the rotor 4 rotates further leftward than the revolution of the rotor 4 to rotate freely and change the posture upward. The closed loop of the movement locus of the tip end of the split claw 9 of the planting rod 8 is a closed loop curve 26 which is elongated and slender in the vertical direction as shown by the chain double-dashed line in FIG.

In the above embodiment, the sun gear 5, the intermediate gear and the intermediate gear are used as means for rotating the planting shaft 7 once in the opposite direction by one rotation of the rotating body 4.
A planetary gear mechanism consisting of 12 and interlocking gears 13 and 14 is shown, but the sun gear 5 is replaced by a pulley, and rotation is performed by other means such as belt transmission between this pulley and the planting shaft 7. It goes without saying that the planting shaft 7 may make one revolution in the opposite direction per one rotation of the body 4, and the number of the planting rods 8 is not limited to two in the above-mentioned embodiment, and is equally divided into three in the circumferential direction. It is also possible to arbitrarily make a plurality of pieces.

Fig. 5 shows a long hole in the front and back to form a long hole in the base of the cultivation soil 21 so that it can be applied to a condition where the pitch of planting the seedling is short.
By tightening this with bolts 27, the soil for cultivation
This is an example in which 21 can be attached to the lower surface of the planting rod 8 so as to be movable back and forth, and if the grounding portion 22 of these cultivation soil 21 is formed in a curved shape that is downwardly convex in the front and rear direction and / or the left and right direction. , The root part of the seedling is less damaged.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a front view, Fig. 2 is a plan view, Fig. 3 is an enlarged sectional view taken along line III-III in Fig. 1, and Fig. 4 is IV- in Fig. 3. FIG. 5 is a sectional view taken along line IV, and FIG. 5 is a side view showing another embodiment. 1 ... Transmission case, 3 ... Rotating shaft, 4 ... Rotating body, 5 ...
… Sun gear, 6 …… cam shaft, 7 …… planting shaft, 8 …… planting rod, 9 …… dividing claw, 10 …… planting table, 11 …… intermediate shaft,
12 …… Intermediate gear, 13,14 …… Interlocking gear, 15 …… Cam, 16
...... Guide shaft, 17 …… Extrusion tool, 18 …… Extrusion lever, 20
…… Base pin, 21 …… Paddy soil, 22, 24 …… Grounding part, 23
…… Seedling planting striations.

Claims (2)

[Claims] 1. A machine near a rear part of a rice transplanter table,
The vertical swinging type seedling planting device, wherein the planting rod is provided so as to swing up and down by power transmission from a power source, and the planting rod is provided with a split claw extending in the direction of the seedling mounting table. A vertical movement type cultivation soil for cultivating seedlings after planting with the split claws in the planting rod is arranged at a position rearward with respect to the traveling direction of the rod in the seedling planting state. Rice planting equipment for rice transplanters. 2. The seedling planting device is attached to a machine body near a rear part of a rice planting table of a rice transplanter, a rotary body which is rotationally driven by power transmission from a power source with its rotation axis being substantially horizontal.
The rotor is located at an appropriate distance from the center of rotation in the radial direction and at equal positions in the circumferential direction of rotation of the rotor.
A split claw that axially supports a planting shaft, which is adapted to rotate once in a direction opposite to the rotating direction during one revolution of the rotating body, in parallel with the rotation axis and extends in the direction of the seedling table on each planting shaft. A seedling planting device for a rice transplanter according to claim 1, which is a rotary type seedling planting device equipped with respective planting rods provided with.