JP2570177B2 - Seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called rotary seedling planting apparatus in which a rotating case is provided with a plurality of planting cases having planting claws.

[0002]

2. Description of the Related Art As shown in Japanese Patent Publication No. 49-31773, a rotary-type seedling plant is used in place of a crank-type seedling plant to reduce vibration and improve efficiency. It has been proposed to use a seedling planting device. However, the conventional rotary seedling planting apparatus uses a crank between the planetary gears and the planting case to draw a vertically long elliptical trajectory for planting the seedlings on the planting claws. However, there is still a problem that torque fluctuation is large and its operation is unstable, vibration cannot be sufficiently reduced, and durability is low.

[0003] In addition, this type of seedling planting apparatus employs a configuration in which when a planting claw comes to a field at the lower end while turning, the pushing claw is pressed down and the held seedling is pressed against the soil. For this reason, the amount of vertical movement of the push claw and the timing of the movement are important, and these factors largely depend on the shape of the push cam. That is, since the extrusion cam affects the basic performance such as the inclination of the seedling to be planted and the occurrence of floating seedlings, it is necessary to perform regular maintenance and inspection, and if this is worn or damaged, it needs to be replaced. As for the thing, the maintenance and inspection of the extrusion cam are not considered at all, and the maintenance and inspection of the extrusion cam are difficult.
There was a problem that seedling planting work was hindered and good seedlings could not be planted.

[0004]

According to the present invention, in order to solve the conventional problems, planetary gears 31 are provided on a rotating case 22 with planetary gears 31 rotating unequally by gear transmission with rotation of the rotating case 22. Attachment members 60, 60 which operate integrally with the planetary gears 31, 31 are arranged on the side of the rotating case 22, and the implantation claws 39, 39 of the implantation cases 35, 35 attached to the attachment members 60, 60. In a seedling planting apparatus for taking out one seedling per plant from the seedlings placed on the seedling mounting table 19 during the turning, and planting the seedlings in the field, the extruding claws 38a are moved up and down at the tip side of the planting claws 39. Cam 36.3 to be moved to
6 are housed in the planting cases 35, 35, and the planting case 3
When the 5.35 is removed from the mounting members 60, the rotating case 22 side of the planting cases 35, 35 is attached to the mounting members 60, 60 so that the interior of the planting cases 35, 35 is opened and the extruding cams 36, 36 appear. It is a seedling planting apparatus characterized by being detachably fixed.

[0005]

According to the present invention, the planetary gear 31 which rotates at a non-uniform speed by the transmission of the gear with the rotation of the rotating case 22 is provided.
31 is provided on the rotating case 22, the mounting members 60, 60 that operate integrally with the planetary gears 31, 31 are arranged on the side of the rotating case 22, and the planting case 35, mounted on the mounting members 60, 60. This is a seedling planting device that takes out one seedling per plant from the seedlings placed on the seedling mounting table 19 while the 35 planting claws 39, 39 are rotating, and planting them in the field. It is not intended to draw a vertically long elliptical trajectory for planting seedlings on planting claws using a crank or the like between the planting case and the planetary gears 31 by gear transmission.
Rotates at an irregular speed, its operation is smooth and stable, the vibration is sufficiently reduced as compared with the conventional example, and a good seedling can be planted.

[0006] Extrusion cams 36 for vertically moving the extruding claw 38a on the tip side of the planting claws 39, 39 are accommodated in the planting cases 35, 35, and the planting cases 35, 35 are attached to the mounting member 60.・ Planting case 35.3 when removed from 60
5 is attached to the rotating case 22 side of the planting cases 35 so that the extruding cams 36 appear.
Since the seedling planting apparatus is detachably fixed to the seedling 60, the planting case 35 is removed from the mounting member 60 when performing maintenance and inspection of the extrusion cam 36.
Reference numeral 5 denotes an extruding cam 3 in which the rotating case 22 side is opened.
6 appears, the maintenance of the extrusion cam 36 can be easily performed, and it is possible to prevent a situation in which the seeding operation is performed while the extrusion cam 36 is worn or damaged. Seedlings can be planted.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG.
Project rearward, and a seedling planting device 13 is attached to a rear end thereof to form a riding type seedling planting machine. The traveling vehicle body 1 is configured as follows. A pair of front wheels 2 and rear wheels 3 are arranged in front and rear, respectively, and after the power of the central prime mover 4 is shifted in the transmission case 8, the power is transmitted to the front wheels 2 by the transmission shaft 9 and transmitted to the rear wheels 3 by the transmission shaft 10. As a result, they rotate on the cultivator of the paddy field, and the traveling vehicle body 1 is propelled. When the post 7 extends upward from the tip of the fuselage and the handle 6 above it is operated, the front wheel 2 is steered. A seat 5 is provided on the prime mover 4.

[0008] A mounting frame 17 is provided at the rear end of the link 15 and can be moved up and down by a hydraulic device 16.
Seedling plant 13 is configured as follows. The center front end of the transmission case 18 is mounted on the mounting frame 17 by a rolling shaft extending in the front-rear direction. A seedling mounting table 19 is provided on the transmission case 18 so as to fall forward and reciprocates left and right. As shown in FIG. 2, the seedling mounting table 19 has an upper surface partitioned by side walls 20 in the front-rear direction.
Five mat seedlings are placed side by side on a to 19e. A seedling receiving plate 21 having an L-shaped cross section is fixed to the transmission case 18 below the seedling mounting table 19, and the seedling mounting surfaces 19a to 19
The end of the mat seedling on e reciprocates left and right on the seedling receiving plate 21. Five outlets 21a to 21e are provided at equal intervals in the seedling receiving plate 21, and planting claws 39 described later are provided.
… Pass from top to bottom. Five sets of planting tools 34 are arranged after each of the outlets 21a to 21e so as to cut off the end of the mat seedling and plant it in the mud below. A central float 51 and a pair of left and right side floats 52, 52 are arranged under the transmission case 18, and slide on the mud surface by the advance of the traveling vehicle body 1, and the planting implements 34 ...
The mud on which the seedlings are planted is prepared in advance. Then, the power of the prime mover 4 reaches the transmission case 18 via the PTO shaft 11 and the transmission shaft 12, and the seedling mounting table 19 and the planting tools 34 are driven as described above. The lever 14 is attached to the post 7, the wire 50 is pulled by the operation, and the clutch 45 in the transmission case 18 interrupts the transmission power. Lever 58a / 58b is the seedling plant 13
, And pulls the wires 59 to interrupt the power to the implanters 34.

The vertical portions 18a and 18b of the transmission case 18
18c extends under the seedling receiving plate 21 and extends rearward, and the above-described inoculation tools 34 are arranged at the rear ends of the respective 18c. The following is
Since the left and right are symmetric or the same, one of them will be described. As shown in FIG. 4, a drive shaft 23 is provided laterally at the rear end of the vertical portion 18a of the transmission case 18, and the rotation of the prime mover 4 is transmitted via the tooth wheel 27 and the gears 26, 25, and 24.
And in FIG. 3, it rotates counterclockwise.
The rotating case 22 is fixed to a protruding end of the drive shaft 23 with a key 23a. A sun gear 29 is rotatably mounted on the drive shaft 23 and a boss 29 extending from the sun gear 29 toward the transmission case 18.
a eccentrically fits into the hole 28 a of the metal 28 integral with the transmission case 18, and the sun gear 29
Is designed not to rotate. A pair of planetary gears 31 are arranged at symmetrical positions on the outer periphery of the rotating case 22,
When each of the intermediate gears 30 engages with the sun gear 29 and the number of teeth of all the gears 29, 30, and 31 is the same, and when the rotating case 22 makes one rotation in the counterclockwise direction, the rotating case It makes one rotation in the opposite direction to 22 and keeps the same attitude with respect to the ground. Note that the pitch circles of the respective gears 29, 30 and 31 are eccentric with respect to the center of rotation, and the planetary gears 31 and 31 do not rotate with respect to the ground when turning around the sun gear 29. It is made to swing around the heart. A pair of cylindrical shafts 31a extend from the respective planetary gears 31 to the outside of the rotary case 22, and mounting members 60, 60 having flange-like mounting portions 60b, 60b at their protruding ends, are firmly fixed by cotters 40, 40. It is fixed to. The pair of planting cases 35, 35 are provided with mounting portions 35a, 35a protruding from the locus a of the planting claws 39, 39 on the rotating case 22 side, and the mounting portions 35a, 35a are attached to the respective mounting portions. With the boss portions 60a, 60a fitted to the wall surfaces of the planting cases 35, 35, the planting cases 35, 35 are fixed to the mounting members 60, 60 with the boss portions 60a, 60a fitted into the wall surfaces of the planting cases 35, 35. Have been.

[0010] As shown in FIG.
9 is attached, and the pushing-out claw 38a is configured to move up and down at the tip thereof, thereby forming the implanting tool 34 described above. That is, the planting claw 39 is connected to the seedling mounting table 1 of the planting case 35.
A pushing claw 38a fixed downward to the surface on the side of the ninth side and fixed to the lower end of the pushing rod 38 can move up and down at the lower end. The push rod 38 is pushed down by the spring 42. As shown in FIG. 4, a camshaft 32 is arranged at the center between the cylindrical shaft 31a and the planetary gear 31, one end of which is fixed to the rotating case 22 by a plate 33, and the pushing cam 36 is fixed to the other end. The lever 37 is attached to the planting case 35 so as to swing around the pin 41, both ends of which are engaged with the pushing cam 36 and the pushing rod 38, and the tip of the planting claw 39 passes through the locus A in FIG. When turning counterclockwise, the lever 37 oscillated by the pushing cam 36 at a point past the lower end of the locus a.
Compresses the spring 42, pulls up the push-out claw 38a, passes through the seedling opening 21a, and comes to the lower end of the locus a.
Is designed to push down.

Then, with the rotation of the rotating case 22,
When the two planetary gears 31 circulate around the sun gear 29 via the intermediate gears 30, the pitch circle of each gear 29, 30, 31 is eccentric with respect to the center of rotation as described above. The two planetary gears 31 operate so as to swing about their axes. Therefore, each planting case 35 which operates integrally with the two planetary gears 31
The tips of the planting claws 39 provided at 35 draw a long elliptical locus in the vertical direction. At that time, each planting case 35
-From 35 seedlings (mat seedlings) on which the planting claws 39, 39 are mounted on the seedling mounting table 19 by turning 35, the seedlings for one plant are taken out of the seedling opening 21.
a, and descends when passing through a. The pushing claw 38a moves downward in the mud at the lower end by the action of the pushing cam 36, and the seedling is pressed into the mud and planted. At this time, the unequal speed transmission of each planting case 35, 35 is caused by each gear 29, 30, 3
1, the operation is smooth and stable, the vibration is sufficiently reduced, and a good seedling can be planted.

As shown in FIG. 4, a pair of planting cases 3 is provided.
The side surfaces 35a of the 5.35 are located closer to the rotating case 22 than the rotation surfaces of the planting claws 39, and a part thereof protrudes, and the planting behind the planting claws 39, 39 as viewed from above. The case 35 is formed in a shape in which the surface thereof is largely notched. When the pair of planting cases 35, 35 pivots through the locus A in FIG.
Of the planting case 35 in the descending stroke passes through the above-mentioned notched portion.

In particular, when performing maintenance and inspection of the extrusion cam 36 before and after the seedling planting season or after the end of the season, the bolts 61 are loosened and removed, and the planting case 35 is opposed to the rotating case 22. Pull to the side, the boss 6
The planting case 35 comes out of the case 0a and is removed, and the inside of the planting case 35 is exposed, and the extruding cam 36 therein appears. Therefore, the extruded cam 36 that has appeared in this way can be easily maintained and inspected, and it is possible to prevent a situation in which the extruding cam is worn or damaged and the seedling is planted beforehand. Can be planted.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding type seedling planter.

FIG. 2 is a plan view of the seedling plant.

FIG. 3 is an enlarged partial cross-sectional side view of the seedling planting apparatus.

FIG. 4 is a sectional plan view of the seedling planting apparatus.

[Description of Signs] 19 Seedling stand 22 Rotating case 29 Sun gear 31 Planetary gear 35 Planting case 36 Extrusion cam 38a Extrusion claw 39 Planting claw 60 Mounting member

Claims (1)

(57) [Claims] 1. Gear transmission with rotation of rotating case 22
The planetary gears 31 that rotate unequally due to the rotating case
22 and a gear that operates integrally with the planetary gears 31.
The attachment members 60, 60 are arranged on the side of the rotating case 22, and the planting case 35,
In a seedling planting apparatus which takes out one seedling per plant from the seedlings placed on the seedling mounting table 19 while the 35 planting claws 39, 39 are turning, the planting claws 39, 39 Extrusion cams 36 for vertically moving the extruding claw 38a on the distal end side are accommodated in the planting cases 35, 35, and the planting cases 35, 3
5 is removed from the mounting members 60, 60,
A seedling planting apparatus characterized in that the rotating case 22 side of the planting cases 35, 35 is detachably fixed to the mounting members 60, 60 so that the inside of the plant 35 is opened and the extruding cams 36 appear.