JPH104733A - Seedling planting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedlings planter capable of planting seedlings in a staggered state at a high speed. SOLUTION: This seedling planter has a rotatable case 20 provided so as to rotate in one body with a planting and driving shaft 12 crossing to the progressing direction of the machine body, a first planting case 35 provided on the rotatable case 20 and driven to rotate in a direction reverse to the rotating direction of the case at a different speed and the same period, a second planting case 42 provided on the first planting case 35 in freely revolvable around a shaft center crossing to the planting driving shaft 12 and a seedlings separator 14 fitted to the second planting case 42. In the case, a planting case swinging shaft 31 kept to be parallel to the rotating shaft center of the first planting case 35 and not to relatively rotate to the machine body is provided on the rotatable case 20, and a bevel gear 38 rotatable in one body to the planting case swinging shaft 31 is engaged with a bevel gear 39 rotatable in one body to the second planting case 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device provided in a rice transplanter or the like.

[0002]

2. Description of the Related Art In a conventional general seedling planting apparatus, seedlings are always planted on the same planting strip. When seedlings are planted by such a seedling planting apparatus, depending on the planting speed, the distance between the planted seedlings is not always equal in the left-right direction and the front-back direction. In the case of the average planting speed, as shown in FIG. 9, it is often set that the distance between the front and rear plants is smaller than that between the left and right plants. If the stocks differ depending on the direction in this way, a situation occurs in which the stocks are too narrow in one direction, but too wide in the other direction. Therefore, by swaying the seedling planting tool left and right and distributing the planting position of the seedling to the left and right, the seedlings are planted in a staggered manner as shown in FIG. Such a seedling planting device is being studied.

[0003]

In the above-described conventional seedling planting apparatus for planting seedlings in a staggered manner, the seedling planting tool is swung right and left by a cam mechanism. It was difficult to plant seedlings. An object of the present invention is to make this possible.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the seedling planting device according to the present invention, a rotating case provided so as to rotate integrally with the planting drive shaft orthogonal to the direction of travel of the body, a non-uniform speed in the rotating case in the opposite direction to the rotation direction, And a planting first case provided so as to rotate at the same cycle, a planting second case rotatably provided around the axis perpendicular to the planting drive shaft in the planting first case, A seedling separator attached to the second planting case, wherein the rotating case is parallel to the rotation axis of the first planting case and is kept from rotating relative to the machine body. Provide a driving shaft,
A bevel gear that rotates integrally with the planting case swing shaft and a bevel gear that rotates integrally with the planting second case are meshed with each other.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which a seedling planting apparatus of the present invention is mounted on a riding rice transplanter will be described below with reference to the drawings.
The illustrated rice transplanter 1 includes a seedling planter via a lifting link device 6 on the rear side of a traveling vehicle body 5 having a pair of left and right front wheels 3 and 3 and rear wheels 4 and 4 which is mounted on and driven by an engine 2. 7 is mounted. The traveling vehicle body 5 is provided with a control seat 9 and a steering handle 9.

The seedling planting machine 7 includes a planting transmission frame 10 to which power is input from the traveling vehicle body 5, and a planting stand 11 which is inclined on the planting transmission frame 10 so that the front side is higher. The seedling mounting table 1 is provided by a left-right reciprocating mechanism provided in the central case portion 10a of the planting transmission frame 10.
1 reciprocates left and right. Further, the planting drive shaft 1 protruding from both sides of each rear end of the seedling planting device transmission frame portions 10b extending rearward of the planting transmission frame 10.
The seedling-planting devices 13, ... of the present invention are attached to 2, ....

The seedling mounting table 11 reciprocates right and left, and the seedlings on the seedling mounting table are sequentially supplied to the seedling receiving openings 15a,... Of the seedling receiving frame 15 provided at the lower end of the seedling mounting table. Are closed and operated while drawing a predetermined trajectory to separate and hold the seedlings supplied to the seedling outlets 15a, and release the held seedlings to the field. They are to be planted. In the lower part of the seedling planting machine 7, a center float 16a is provided at the center, and side floats 16a are provided at both left and right sides.
The b and 16b are rotatably attached to the left and right lateral axes, respectively, and seedlings are planted on the field scenes that are leveled by these floats.

Next, the structure of the seedling planting apparatus 13 will be described.
The planting drive shaft 12 is attached to the rear end of the seedling planting transmission frame 10b.
Is rotatably provided, and a rotating case 20 is attached to a protruding portion of the planting drive shaft 12 so as to rotate integrally therewith. The following two gear trains are provided in the rotating case 20.

The gear train for rotating the planting case includes a planting drive shaft 1.
2, a sun gear 22 is provided so as to be rotatable and non-rotatable with respect to the metal 21 fixed to the seedling transmission frame portion 10b;
Counter gears 23, 23 meshing with the sun gear 22 are rotatably provided on counter shafts 24, 24, and planetary gears 25, 25 meshing with the counter gears 23, 23 are rotatably provided at both ends of the rotating case 20. It is non-rotatably attached to cylindrical planting case rotation shafts 26, 26 by keys 27, 27. The sun gear 22, counter gears 23, and planetary gears 25, 25 of the gear train for rotating the planting case are unequal-diameter gears such as eccentric gears or non-circular gears. During the rotation, the planting case rotation shafts 26, 26 make one rotation in the opposite direction at an irregular speed.

The gear train for swinging the planting case is rotatable about the planting drive shaft 12 and the transmission frame portion 10b for planting seedlings.
A sun gear 28 is provided so as not to rotate with respect to the metal 21 fixed to the counter gear 29, and a counter gear 29, which meshes with the sun gear 28,
29 is rotatably provided on the counter shafts 24, 24, and the planet gears 3 meshed with the counter gears 29, 29.
Keys 32, 32 are attached to the planting case swinging shafts 31, 31 which are rotatably mounted inside the cylindrical planting case rotating shafts 26, 26 and are non-rotatably provided on the rotating case 20.
Is attached so that it cannot rotate. The sun gear 28 and the counter gears 29 and 2 of the gear train for swinging the planting case.
9, and the planetary gears 30, 30 are circular gears having the same diameter, so that the planting case swinging shafts 31, 31 make one rotation at a constant speed in the reverse direction while the planting drive shaft 12 makes one rotation. Has become.

One end of the planting case rotating shaft 26 projects laterally from the rotating case 20, and a planting first case 35 is integrally attached to a mounting plate 34 fixed to the projecting end portion by bolts. On the other hand, the planting case swing shaft 3
One end of 1 protrudes laterally from the planting case rotation shaft 26, and the tip of the protruding portion is rotatably supported by the planting first case 35 via a bearing.

A bevel gear 38 is attached to the planting case swing shaft 31.
The bevel gear 38 meshes with a bevel gear 39 provided in the first planting case 35 so as to be rotatable around an axis orthogonal to the planting case swing shaft 31.
The bottom of the planting second case 42 is fixed to the upper end of the longitudinal axis 40 integrally attached to the bevel gear 39. Note that the vertical axis 40 is cut out in a U-shape in a side view, and the planting case swing shaft 31 passes through the cutout portion 40a.
Even if 0 swings around the axis, the two shafts 31 and 40 do not interfere with each other.

While the planting drive shaft 12 makes one rotation, the planting case rotating shafts 26, 26 make one rotation in the opposite direction at a non-uniform speed, so that the first planting cases 35, 35 and the second planting case. The second planting case 4 rotates around the planting drive shaft 12 while gradually changing the side view posture with respect to the body.
2 and 42 show the seedling separation tools 14, 14 in side view.
A closed-loop motion that draws the tip trajectory P shown in FIG. Then, the pair of seedling separation tools 14 and 14 are alternately set to the seedling removal outlet 1.
5a, the seedlings on the seedling mounting table 11 are separated one by one, and the separated seedlings are released and planted in the topsoil of the field.

Further, while the planting drive shaft 12 makes one rotation, the planting case oscillating shafts 31, 31 make one rotation in the opposite direction at a constant speed, so that the planting case oscillating shafts 31, 31 move relative to the machine body. The relative rotation is maintained. As described above, while the first planting cases 35, 35 and the second planting cases 42, 42 are turning around the planting drive shaft 12, the posture of the planting case swing shaft 31 is changed by changing the side view posture with respect to the body. , 31 and bevel gears 39, 3 rotatably provided about an axis orthogonal to the planting case swing axis.
9 changes, the longitudinal axes 40, 40 integrally attached to the bevel gears 39, 39 swing about the axis, and the second planting cases 42, 42 swing right and left. One planting second case 42 swings leftward from the posture in which the tip of the seedling separator 14 faces the front, and the other planting second case 42 swings rightward from the posture in which the tip of the seedling separator 14 faces the front.
Therefore, the tip trajectories of the two seedling separating tools 14 and 14 have different three-dimensional trajectories P (L) and P (R). In addition, the swinging operation of the planting second cases 42, 42 swings right or left immediately after the tip of the seedling separator 14 has passed the seedling removal outlet 15a and reaches the field scene. Before the attachment is completed and the tip of the seedling separation tool 14 returns to the seedling removal port 15a, the tip of the seedling separation tool 14 returns to the posture facing the front.

A fork-shaped seedling separator 14 is formed by bending a bar having sharp ends at both ends into a U-shape, and is fixed to the second planting case 42.
4 is provided with a seedling pusher 44 that protrudes toward the tip of the seedling separator. The mechanism for operating the seedling pushing tool 44 is as follows.

The seedling pushing tool 44 has a rod-like portion 44a inserted into the planting second case 42, and a spring 45 between the end of the rod-like portion 44a and the inner wall of the planting second case 42.
The seedling pushing tool 44 is urged so as to project from the case. Also, the rod-like portion 44a of the seedling pushing tool is provided.
The tip of a seedling push-out arm 47 pivotally attached to the second planting case 42 by a pin 46 is engaged with. The upper end of the interlocking rod 50 inserted into the hole formed in the axis of the longitudinal axis 40 contacts the lower surface of the seedling pushing arm 47, and the lower end of the interlocking rod is the planting case swing shaft. It is in contact with the outer peripheral portion of the seedling pushing cam 51 attached to 31. Thereby, in conjunction with the rotation of the planting case swing shaft 31, the seedling pushing-out arm 47 pushes up the seedling pushing-out arm 47 through the interlocking rod 50 at a predetermined timing, so that the seedling pushing-out tool 44 retracts. When the push-up of the seedling pushing arm 47 by the seedling pushing cam 51 is released, the seedling pushing tool 44 is protruded by the action of the spring 45. The operation timing of the seedling pushing tool 44 is such that the seedling pushing tool 44 is retracted before the tip of the seedling pushing tool 14 approaches the seedling outlet 15a,
When the tip of the seedling has entered the topsoil of the field, it protrudes and releases the seedlings held at the tip of the seedling separator 14 into the topsoil.

The riding rice transplanter 1 is configured as described above. When the traveling vehicle body 5 is driven by driving the seedling transplanter 7, the seedlings on the seedling mounting table 11 are moved by the seedling transplanters 13,. Planted in topsoil. The seedling planting apparatus 13 includes two sets of planting cases 35, 42, 35, 42 that operate to plant seedlings alternately.
The seedling separating tool 14 of one of the planting cases 35 and 42 seeds the seedling N at a position left from the left and right center line CL by a predetermined distance,
The seedling separation tool 14 of the other seedling cases 35 and 42 seeds the seedlings N at a position away from the left and right center line CL by a predetermined distance to the right. Thereby, seedlings N,... Are planted in a staggered manner as shown in FIG. When planting is performed in this manner, the planting intervals S of the seedlings are equal.

Next, a supplementary description will be given of a seedling planting apparatus 13 'capable of planting seedlings in a staggered manner with one seedling separating tool. 5 to 7, reference numeral 12 denotes a planting drive shaft,
Numeral 14 is a seedling separating tool, 20 is a rotating case, 35 is a first planting case, 42 is a second planting case, and 44 is a seedling pushing tool, so that the rotating case 20 rotates integrally with the planting drive shaft 12. , And a set of planting cases 35 and 42 is provided in the rotating case.

A gear train for planting case rotation including a sun gear 60, a counter gear 61, and a planetary gear 62 is provided in the rotating case 20, and the planting case rotating shaft 63 is rotated while the planting drive shaft 12 makes one rotation. Is made to make one revolution in the reverse direction at an irregular speed. The first planting case 35 is provided so as to operate integrally with the planting case rotating shaft 63.

Further, a gear train for swinging the planting case including a second counter gear 65 and a second planetary gear 66 is provided in the rotating case 20, and the planting case swings while the planting drive shaft 12 makes one rotation. The driving shaft 67 rotates by half in the reverse direction. A planting case swing cam 68 and a seedling pushing cam 69 are attached to the planting case swing shaft 67.

The planting case swing cam 68 has a projection 6 on its outer peripheral surface.
An end of a rotating plate 71, which is screwed to the longitudinal axis 70, is in contact with the outer peripheral surface of the cam having a steel plate 72 interposed therebetween.
The vertical axis 70 is the first case 3 planted with the axis oriented vertically.
5 is supported via a bearing, the upper end of which is fixed to the bottom of the second planting case 42, and the lower end thereof is engaged with one end of a spring 73 wound in a coil shape. The other end of the first planting case is brought into contact with the inner wall of the first planting case 35, and the vertical axis 70 is urged so that the first planting case 35 rotates in one direction.

The planting case swing cam 68 makes one rotation while the planting drive shaft 12 makes two rotations. At the first rotation of the planting drive shaft 12, the projecting portion 68a of the planting case swing cam 68 makes the planting case swinging cam 68 vertical. The shaft 70 rotates in one direction from the neutral position, and the planting drive shaft 12
At the time of the second rotation, the recess 68 of the planting case swing cam 68
b rotates the longitudinal axis 70 in the opposite direction from the neutral position. Thus, the second planting case 42 alternately performs the operation of swinging leftward and the operation of swinging rightward from the posture in which the tip of the seedling separating tool 14 faces the front with respect to the first planting case 35. In addition, the swinging operation of the planting second case 42 swings right or left immediately after the tip of the seedling separator 14 has passed through the seedling outlet 15a and reaches the field scene. The seedling separating tool 14 returns to a posture in which the front end faces the front by the time it is completed and the front end of the seedling separating tool 14 returns to the seedling removal port 15a.

The seedling pushing tool 44 has a rod-like portion 44a inserted into the planting second case 42, and a spring 45 between the end of the rod-like portion 44a and the inner wall of the planting second case 42.
The seedling pushing tool 44 is urged so as to project from the case. Also, the rod-like portion 44a of the seedling pushing tool is provided.
The tip of a seedling push-out arm 47 pivotally attached to the second planting case 42 by a pin 46 is engaged with. The rotation of the seedling pushing arm around the pin 46 is operated by a seedling pushing cam 59 in the first planting case 35.

That is, the cam follower 75 pivotally mounted in the first planting case 35 comes into contact with the seedling pushing cam 69, and the tip of the cam follower 75 enters the U-shaped notch of the vertical axis 70, and the vertical axis 70 The upper end of the interlocking rod 50 slidably fitted in the hole formed along the axis of the push rod pushes the seedling pushing arm 47 upward and rotates. Although the seedling pushing cam 69 makes only one rotation while the seedling separating tool 14 is planted twice, the outer periphery of the seedling pushing cam 69 has two convex portions 69a, 69a which push up the cam followers 75 at equal intervals in phase. Since the seedling separation tool 14 is provided, the tip of the seedling separation tool 14 is connected to the seedling removal port 1 for each planting operation of the seedling separation tool 14.
Before approaching 5a, the seedling pushing tool 44 retracts, and when the tip of the seedling separating tool 14 enters the topsoil of the field, it protrudes, and the seedling held at the tip of the seedling separating tool 14 is removed from the topsoil. To be released.

[0025]

As described above, in the seedling planting apparatus according to the present invention, the planting case provided with the seedling separating tool is swung right and left by a combination of gears to plant the seedlings in a staggered manner. Therefore, it is more durable than a mechanism that swings the planting case to the left and right by a cam mechanism or the like, and enables high-speed planting.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter.

FIG. 2 is a (a) side view and (b) a rear view of the seedling planting apparatus.

FIG. 3 is a plan sectional view of the seedling planting apparatus shown in FIG. 2;

FIG. 4 is a side sectional view of a main part of the seedling planting apparatus shown in FIG. 2;

FIG. 5: (a) side view and (b) of a different seedling planting device.
It is a rear view.

FIG. 6 is a plan sectional view of the seedling planting apparatus shown in FIG. 5;

FIG. 7 is a side sectional view of a main part of the seedling plant shown in FIG. 5;

FIG. 8 is a diagram showing a seedling planting state by the seedling planting apparatus of the present invention.

FIG. 9 is a view showing a seedling planting state by a conventional seedling planting apparatus.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 riding rice transplanter 5 traveling vehicle body 7 seedling planting machine 12 planting drive shaft 13 seedling planting device 14 seedling separator 20 rotating case 26 planting case rotating shaft 31 planting case swinging shaft 35 planting first case 38, 39 bevel gear 42 second planting case

Claims (1)

[Claims] 1. A rotating case provided so as to rotate integrally with a planting drive shaft orthogonal to a traveling direction of a machine body, and the rotating case is rotated in a direction opposite to the rotating direction at an irregular speed and at the same cycle. A first case for planting provided on the first case, a second case for planting provided on the first case for rotation about an axis perpendicular to the planting drive shaft, and an attachment to the second case for planting. A seedling separating tool provided with the planting case swinging shaft which is parallel to the rotation axis of the planting first case and is maintained so as not to rotate relative to the body. A seedling planting device, wherein a bevel gear that rotates integrally with a case swing shaft and a bevel gear that rotates integrally with the planting second case are engaged with each other.