JP2845396B2 - Rice transplanter seedling planting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rice transplanter,
The present invention relates to a rotary-type seedling plant for dividing seedlings one by one from a seedling mat on a seedling mounting table and planting the seedlings in a field scene. 2. Description of the Related Art Conventionally, a rotary seedling plant of this kind has been described in, for example, Japanese Patent Publication No. 47-28104. A hollow rotating case is attached to a rotating shaft protruding from the rotating case. A plurality of planting shafts are supported on an outer peripheral portion of the rotating case in parallel with the rotating shaft, and one end of each planting shaft is connected to the rotating case. Of the left and right side plates, the body extends through the side plate opposite to the body and protrudes in the direction opposite to the body, and is supported by a bearing at the penetrating portion,
At the protruding end, a planting body provided with a seedling dividing claw is mounted in such a manner that the seedling dividing claw faces the seedling mounting table side, while the rotating case has a non-rotatable position at the center position in the rotating case. By arranging a sun gear and transmitting a gear between the sun gear and the planetary gear on the planting shaft via an intermediate gear, each of the planted bodies is rotated by a rotating case, so that It is configured to make a vertical revolving motion with the posture state facing the direction. However, in the conventional rotary seedling, the planetary gear on the planting shaft can be adjacent to the bearing for the planting shaft. Although the shaft length from the planetary gear to the planting body in can be shortened, the intermediate gear is configured to simultaneously mesh with both the non-rotating sun gear and the planetary gear on the planting shaft. Therefore, there is a problem that wear of each tooth of the intermediate gear is large and durability of the intermediate gear is low. [0004] An object of the present invention is to solve this problem without causing instability in planting seedlings. [0005] In order to achieve this object, the present invention provides a method in which a hollow rotary case is mounted on a rotary shaft protruding substantially horizontally and laterally from a portion of a body near a seedling mounting table. A plurality of planting shafts are supported on the outer peripheral portion of the rotating case in parallel with the rotating shaft, and one end of each of the planting shafts is located on the opposite side of the left and right side surface plates of the rotating case from the machine body. While penetrating through the face plate and protruding in the direction opposite to the body, and being supported at a bearing portion at the penetrating portion,
At its projecting end, a planting body having a seedling split nails, in NaeUe device formed by mounting in a posture that seedling split nails toward the seedling mounting table side, the attachment to the rotation axis of said rotating case, rotation Ke
Side of the left and right side plates on the side opposite to the fuselage
It is performed by fitting the mounting boss provided on the face plate to the rotating shaft.
The center position in the rotating case.
The sun gear is passed through the rotation shaft.
And the sun gear is rotated with respect to the airframe.
The rotation shaft is locked so as not to rotate, and further, in the rotation case , an intermediate shaft is supported at a substantially intermediate position between each of the planting shafts and the rotation shaft in parallel with the rotation shaft. A first intermediate gear that meshes with the sun gear, and a second intermediate gear that rotates integrally with the first intermediate gear.
An intermediate gear meshes with an interlocking gear in each of the planting shafts, while a first gear train including the sun gear and the first intermediate gear, and a second gear train including the second intermediate gear and the interlocking gear.
The second intermediate gear and the interlocking gear in the second gear train of the gear train are arranged on the left and right sides of the sun gear and the first intermediate gear in the first gear train opposite to the machine body, and the interlocking gears are provided. Is disposed so as to be close to the bearing portion. ". Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a transmission case in a body of a rice transplanter, and a boss 2 protrudes horizontally and laterally from a side surface of the transmission case 1, and an engine mounted on the body of the rice transplanter in the boss 2. (Not shown), a rotating shaft 3 that is driven to rotate by power transmission is inserted, and a protruding end of the rotating shaft 3 protruding from the boss body 2 has a rotating case 4 formed in an oval and hollow shape. There mounting et is, the rotary casing 4 is configured to be rotated in the right direction of the arrow a as viewed from the side. The rotating shaft of this rotating case 4
3 is installed on the left and right sides of the rotating case 4.
Side surfaces of the plates 4a and 4b opposite to the transmission case 1
The mounting boss integrated with the plate 4a is
It is configured to fit . [0007] the central portion of the rotary casing 4,
A non-rotating sun gear 5 rotatably fitted on the boss body 2 and rotatable with respect to the rotating case 4 is provided with
The sun shaft 5 is disposed so that the rotation shaft 3 penetrates through the sun gear 5, and the sun gear 5 is non-rotatably locked to the transmission case 1 by an appropriate rotation phase adjusting means (not shown). Have been. At both left and right ends of the rotating case 4, a support shaft 6 is supported at a position where the distance L from the rotating shaft 3 is equal to the rotating shaft 3 so as to be non-rotatable with respect to the rotating case 4. A hollow planting shaft 7 is rotatably fitted on the shaft 6, and one end of each of the planting shafts 7 is connected to one of the left and right side plates 4 a, 4 b of the rotating case 4 on the side opposite to the transmission case 1. , Projecting in the opposite direction to the transmission case 1, and supporting the penetrating portion with the opposite side plate 4 a by a bearing portion 7 of a ball bearing. The planted body 8 provided with the planted body 8
So that the seedling dividing claw 9 in
At the base end 8 a of the planting body 8, the intermediate shaft 11 is parallel to the rotating shaft 3 and the planting shaft 7 in the rotating case 4 at a position intermediate between the rotating shaft 3 and the planting shaft 7. The first intermediate gear 12 which is always meshed with the sun gear 5 and has the same number of teeth as the sun gear 5 is fitted on the intermediate shaft 11 to be rotatable. Is configured to make one rotation per rotation of the rotating case 4. On the other hand, a second intermediate gear 13 having the same number of teeth as the first intermediate gear 12 is fitted on the intermediate shaft 11, while a second intermediate gear 13 having the same number of teeth as the first intermediate gear 12 is fitted on the planting shaft 7. 2 An interlocking gear 14 having the same number of teeth as the intermediate gear 13 and constantly meshing with the intermediate gear 13 is fitted, and the planting shaft 7 is
It is configured to make one rotation per one rotation. In this case, the second intermediate gear 13 and the interlocking gear 14 meshing with the second intermediate gear 13 are provided on the left and right sides of the sun gear 5 and the first intermediate gear 12 on the opposite side to the transmission case 1. , Are arranged so as to be close to the bearing portion 7a. In this configuration, when the rotating case 4 revolves rightward in the direction of the arrow A by the rotating shaft 3, the first intermediate gear 12 meshing with the sun gear 5 that cannot rotate with respect to the transmission case 1 is rotated. With the revolution of No. 4, it rotates rightward by the arrow B by the same rotation angle as the rotation angle of the revolution. The planting shaft 7 interlocking with the first intermediate gear 12 via the second intermediate gear 13 and the interlocking gear 14 rotates the first intermediate gear 12 in the leftward direction of the arrow C, that is, in the direction opposite to the revolving direction of the rotating case 4. The planting body 8 attached to the planting shaft 7 rotates around the rotating shaft 3 while facing in the direction of the seedling mounting table 10,
During this turning movement, when the side facing the seedling mounting table 10 is descended from above to below, the seedlings 9 are split from the seedling mat on the seedling mounting table 10 by the tip 9a of the seedling dividing claw 9, and then the seedlings are split. The plant is planted in the field scene 15 near the lower lower limit, and then rises from the field scene 15. In this case, the second intermediate gear 13
And the interlocking gear 14 is connected to the center (0) of each gear.
Is constituted by an eccentric gear which is eccentric by an appropriate dimension (e) from the center of rotation of each of the shafts 11 and 7 so that the rotation of the rotating case 4 to the right causes the planting shaft 7 to move to the left. In the rotation, the rotation speed of the rotating case 4 is increased or decreased with respect to the rotation speed of the rotating case 4 due to a difference in diameter between the two eccentric gears 13 and 14 during one rotation. Therefore, as shown in FIG. 5, the time when the rotation speed of the non-constant rotation of the planting shaft 7 to the left with respect to the revolution of the rotating case 4 becomes lower is the time when the planting body 8 The time at which the rotation speed increases among the non-constant rotations to the left of the planting shaft 7 corresponds to the time at which the planting shaft 7 approaches the upper limit of ascending. By setting so that each planted plant 8 descends so as to approach the field scene 15, it rotates on its own to delay to the left from the revolution of the rotating case 4 and changes its attitude downward, and the upper limit is reached. When approaching, the plant moves in the left direction more than the revolution of the rotating case 4 and swings so as to rotate on its own and change the posture upward.
The closed locus of the movement trajectory of the tip 9a of the seedling dividing claw 9 is an elliptical closed loop curve 16 which is elongated in the vertical direction, as shown by the two-dot chain line in FIG. The number of the planting bodies 8 is not limited to two in the above-described embodiment, but can be arbitrarily set to three or more equal parts in the circumferential direction. The timing when the planted body 8 changes its posture upward when descending can be arbitrarily adjusted and set by adjusting the rotational phase position of the sun gear 5 with respect to the transmission case 1. Also, as shown in the drawing, the mounting base end 8a of the planting body 8 to the planting shaft 7 is
As shown in FIG. 2, when the tip 9 a of the seedling dividing nail is shifted from the tip 9 a of the seedling dividing nail in the direction of the rotating case 4 by an appropriate dimension (S) as appropriate, the tip 9 a of the seedling dividing nail becomes the base end 8 a of the planting body 8.
Can be avoided, and the distance L from the rotating shaft 3 to the planting shaft 7 can be shortened, so that the size of the rotating case 4 can be reduced. As described above, according to the present invention, in the rotary seedling plant, each planted body attached to the rotating case is oriented in the direction of the seedling table by the rotating motion of the rotating case. A first gear train composed of a sun gear and a first intermediate gear meshing with each other, and a second gear composed of a second intermediate gear and a planetary gear also meshing with each other, so as to make a revolving motion in the vertical direction in the posture state. Since the first intermediate gear meshes only with the sun gear and the second intermediate gear meshes only with the planetary gear, wear of the teeth in these two intermediate gears is reduced. Compared with the conventional case where the intermediate gear meshes with both the sun gear and the planetary gear at the same time, the number of gears can be greatly reduced, and the durability can be surely improved. By the way, when the first gear train and the second gear train are provided in the rotating case, the second intermediate gear and the interlocking gear in the second gear train are replaced by the sun gear and the first intermediate gear in the first gear train. When the gear is disposed on the body side of the left and right sides of the gear, the interlocking gear in the second gear train is separated from the bearing portion for the planting shaft on which the interlocking gear fits, so that the interlocking gear is planted from the interlocking gear in the planting shaft. As the shaft length to the body becomes longer, the bending angle when the planting shaft is torsionally deformed increases, and the radial movement of the planting shaft increases, so the planting posture of the seedling with respect to the field scene is unstable. Is increased. On the other hand, according to the present invention, the second intermediate gear and the interlocking gear in the second gear train are divided into portions of the left and right sides of the sun gear and the first intermediate gear in the first gear train which are opposite to the body. In addition, the interlocking gear is disposed close to the bearing portion, whereby the length of the interlocking gear from the interlocking gear to the planting body in the planting shaft can be shortened, and the bending when the planting shaft is torsionally deformed. Since the angle can be reduced and the swinging motion of the planting shaft in the radial direction can be reduced, the planting posture of the seedling with respect to the field scene can be greatly stabilized. Therefore, according to the present invention, it is possible to reduce the durability by rotating each planted body attached to the rotating case in the up and down direction in a posture facing the seedling mounting table by the rotating motion of the rotating case. And an effect that can be surely achieved without causing instability of the planting posture of the seedling with respect to the field scene.

[Brief description of the drawings] FIG. 1 is a front view showing an embodiment of the present invention. FIG. 2 is a plan view of FIG. FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 1; FIG. 4 is a sectional view taken along line IV-IV of FIG. 3; [Explanation of symbols] 1 Transmission case 3 Rotation axis 4 rotating case 4a, 4b Side plate of rotating case 5 Sun gear 7 Planting axis 7a Bearing part 8 Planting body 9 Seedling split claw 9a Seedling claw tip 11 Intermediate shaft 12 1st intermediate gear 13 Second intermediate gear 14 Interlocking gear 16 Movement trajectory

Claims (1)

(57) [Claims] A hollow rotating case is attached to a rotating shaft projecting substantially horizontally and laterally from a portion near the seedling mounting table of the airframe, and a plurality of planting shafts are supported on an outer peripheral portion of the rotating case in parallel with the rotating shaft. Then, one end of each of the planting shafts penetrates a side plate opposite to the fuselage out of the left and right side plates in the rotating case and protrudes in a direction opposite to the fuselage. On the other hand, in a seedling plant in which a planting body provided with a seedling dividing claw at the protruding end thereof is mounted in a posture in which the seedling dividing claw faces the seedling mounting table , Installation is on a rotating case.
Of the left and right side panels on the opposite side of the aircraft.
By attaching the mounting boss to the rotating shaft
On the other hand, at the center position in the rotating case,
The car is arranged so that the sun gear penetrates the rotating shaft.
Then, the sun gear is non-rotatably engaged with the airframe.
Stop, and further, in the rotating case , an intermediate shaft is supported at a substantially intermediate position between each of the planting shafts and the rotating shaft in parallel with the rotating shaft. A first intermediate gear meshing with the gears, and a second intermediate gear rotating integrally with the first intermediate gear are provided, while the second intermediate gear meshes with the interlocking gears on each of the planting shafts;
A first gear train composed of the sun gear and the first intermediate gear, and a second intermediate gear and the interlocking gear in the second gear train among the second gear train composed of the second intermediate gear and the interlocking gear,
A rice transplanter characterized in that interlocking gears are disposed on portions of the left and right sides of the sun gear and the first intermediate gear in the first gear train that are opposite to the machine body so that the interlocking gears are close to the bearing portion. Seedling plant equipment.