JPH07163217A - Seedling planter - Google Patents

Abstract

PURPOSE:To provide a rotary type seedling planter, capable of readily regulating the number of planted seedling based on one stock and surely preventing the set number of the planted seedlings from varying after the regulation. CONSTITUTION:This seedling planter is provided by installing a regulating mechanism (A) capable of rotating and finely controlling the relative positions of both an installing unit 42 and a turning case around the turning shaft between both and having the function as a stopper for receiving the reactional force in planting seedlings of each turning case, providing an installing part (42c) in each of the installing unit 42 and the turning case so as to locate on both sides of a line connecting an engaging part (40c) of the regulating mechanism (A) with the turning case to the turning shaft and fixing the installing part (42c) with a fixing tool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a rotary type seedling planting device used in rice transplanters and the like.

[0002]

2. Description of the Related Art As seen in JP-A-61-40829, in order to reduce vibration and speed up seedling planting,
In place of the conventional crank type seedling planting device, a rotary type seedling planting device has come to be used.

[0003]

As described in the above publication, the planting claw is provided so as to rotate integrally with the planetary gear, and does not rotate when it turns around the sun gear. The sun gear and the planetary gear are linked at unequal speeds so that the downward posture swings slightly forward and backward. That is, in this rotary system, since the swivel case to which the planting claw is attached is swung in the front-rear direction, the load is high, and there is a risk of loosening of the installation between the planetary gear side and the swivel case. The number of seedlings planted per strain may fluctuate.

Japanese Patent Application Laid-Open No. 60-66908 also proposes a screw whose mounting angle between the shaft and the swivel case can be adjusted. However, in this product, the swivel case is fixed to the planetary gear side with a screw. Since it is only an adjustment part, and it is not fixed at a part distant from the shaft in the radial direction, the fixing may be unstable and the shaft and the swivel case may be loosened. Not not.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a plurality of planetary gears 33, 33 which are provided so as to rotate around the sun gear 31 in the same posture. The case 29 is fixed to the drive shaft 28, and the rotating shafts 34, 34 rotate together with the planetary gears 33, 33.
The mounting bodies 42, 42 are fixed to the side of the rotating case 29, and the swivel cases 40a, 40a having the planting claws 40b, 40b on the respective mounting bodies 42, 42 are rotationally adjusted about the swivel shafts 34, 34, respectively. Freely fix each planting claw 40b, 40b
In a seedling planting device that operates so as to take one seedling from the seedlings placed on the seedling placement table 20 by rotating in a similar posture as the rotating case 29 rotates. Body 42
42 and the swivel cases 40a, 40a between the swivel shaft 34
・ Adjusting mechanism A ・ A having a function as a stopper that finely adjusts the relative positions of the two around 34 and receives the reaction force at the time of planting seedlings of the swiveling cases 40a ・ 40a. -A swivel case 40a-
The mounting portions 42c and 42 are positioned so as to be located on both sides of a line connecting the engaging portions 40c and 40c with the swivel shafts 34 and 34a.
c, 40d, 40d are provided on each of the mounting bodies 42, 42 and each of the swivel cases 40a, 40a, and the mounting portions 42c,
42c, 40d, 40d are fixed by fixing tools 43, 43 to provide a seedling planting device.

[0006]

According to the present invention, the swivel shafts 34, 34 are provided between the mounting bodies 42, 42 and the swivel cases 40a, 40a.
Adjusting mechanism A for finely adjusting the relative position of both
Since each mounting body 42, 42 and each swivel case 40 are provided with
a. The position of 40a can be set properly, and the adjusting mechanism A has a function as a stopper for receiving the reaction force of each swivel case 40a, 40a at the time of planting seedlings, and the adjusting mechanism A -A mounting portions 42c, 42c, 40d so as to be located on both sides of a line connecting the swivel shafts 34, 34 and the engaging portions 40c, 40c with the swivel cases 40a, 40a of A.
40d for each mounting body 42, 42 and each swivel case 40a
40a and each of the mounting portions 42c, 42c, 4
Since 0d and 40d are fixed by the fixtures 43 and 43, the fixing work of both is easy, the mounting is also strong, and it is prevented from loosening in the middle, and the problems of the conventional example are appropriately solved. You can

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the seedling planting device 18 is attached to the rear end of the link 15 protruding rearward from the traveling vehicle body 1 to form a riding type rice transplanter. The traveling vehicle body 1 is configured as follows. A front mission case 3 and a rear mission case 4 are provided in front of and behind the machine casing 2. A pair of front wheels 5 are arranged on both sides of the front mission case 3, and one pair is arranged on both sides of the rear mission case 4.
A pair of transmission cases 6 extend backwards and rear wheels 7 are attached to the rear ends of the respective cases.
, The rotation of the prime mover 10 reaches the front wheels 5 and the rear wheels 7 through the front mission cases 3 and 4, and these are rotated on the cultivator in the paddy field to propel the traveling vehicle body 1. The prime mover 10 is covered with a hood 11, and a seat 12 is provided thereon. The post 8 extends upward at the tip of the machine frame 2, and when the handle 9 on it is operated, the front wheels 5 are steered. The left and right posts 13 extend upward from the horizontal rod 14 connecting the pair of transmission cases 6, and the left ends of the upper link 15b and the pair of lower links 15a are rotatably attached to the rear ends of the links 15a and 15b. The mounting frame 16 (at the right end) can be moved up and down by a hydraulic cylinder 17.

The seedling planting device 18 is constructed as follows. The transmission case 19 is attached to the attachment frame 16 by the rolling shaft 25. A seedling stand 20 is provided on the transmission case 19 in a forward tilted manner so that five mat seedlings are placed side by side and can be moved back and forth from side to side. A seedling receiving frame 26 having an L-shaped cross section is fixed to the transmission case 19 at the lower end of the seedling mounting table 20, and the end of the mat seedling projecting downward from the seedling mounting table 20 moves left and right on this. 5 seedling intakes 2
7 is provided on the seedling receiving frame 26, and the planting claw 4 of the seedling planting device 21 is provided.
0b passes through the respective seedling intake ports 27 from the top to the bottom so as to cut off the end of the mat seedlings.
A central float 20 and a pair of side floats 23 are arranged below the transmission case 19, slide on a mud surface as the traveling vehicle body 1 advances, and each planting claw 40b pre-levels the soil for planting the seedlings. It is supposed to do. The transmission case 19 includes a main transmission case 19a at the front portion, three vertical cases 19b extending from the main transmission case 19a under the seedling receiving frame 26, and a tubular lateral case at the rear end of each vertical case 19b. It is made of 19c (Fig. 2).

The drive shafts 28 which rotate by receiving the power of the prime mover 10 are laterally attached to the respective lateral cases 19c,
The central drive shaft 28 projects to the left, and the left and right drive shafts 28
Respectively project to both sides, and the rotating case 29 is fixed to each of the projecting ends. The following is the same or symmetric, so one of them will be described. As shown in FIG. 3, the surface of the rotating case 29 farther from the lateral case 19c is the drive shaft 28.
It is fixed to the tip of the engine, and both are rotated by the power of the prime mover 10. That is, the rotating case 29 is made of a light alloy in a monaca shape, and the metal 2 is formed on the surface on the far side.
9a is inserted, and this metal 29a and drive shaft 28
And are keyed and then tightened with nuts. The sun gear 31 is rotatably attached to the drive shaft 28 in the rotating case 29, and the claw 31a at the right end of the sun gear 31 meshes with the claw 30a of the fixed metal 30 fixed to the lateral case 19c so as not to rotate. There is. A pair of planet gears 3
3 are arranged at symmetrical positions on the outer periphery of the rotating case 29, and mesh with the sun gear 31 by the respective intermediate gears 32. The sun gear 31 and the planetary gear 33 have the same number of teeth, and when the rotating case 29 makes one revolution, the planetary gear 33 makes one revolution in the opposite direction. That is, when the rotating case 29 rotates about the axis of the drive shaft 28, the planetary gear 33 turns about the axis while maintaining the same posture with respect to the ground. The sun gear 31 is provided so that its rotation center (a) is eccentric with respect to the center (b) of the pitch circle, and the intermediate gear 32 and the planetary gear 33 are also provided eccentrically and are always meshed with each other. Therefore, since the center of the pitch circle of the sun gear 31 is eccentric with respect to the center of rotation, the non-uniform velocity motion is transmitted to the intermediate gear 32. This is transmitted to the planetary gear 33, and the planetary gear 33 swings once around its axis during one turn.

A pair of swivel shafts 3 fixed to a planetary gear 33.
4 extends to the left from the rotating case 29, and a mounting body 42 is firmly fixed to the projecting end by a cotter 41. A pair of swivel cases 40a are fixed to the ends thereof, and the downward facing planting claws 4 are fixed.
0b toward the seedling mounting table 20 side so as to be rotatable with respect to the respective turning shafts 34, and a bolt 43 as a fixture.
Are fastened and fixed to the respective mounting bodies 42. The swivel case 40a and the mounting body 42 are provided with mounting portions 40d and 42c that project in a direction substantially along the plane of rotation of the rotating case 29, and the bolt 43 is mounted on the mounting body 42.
It is adapted to be inserted into an arc-shaped elongated hole 42a formed around the turning shaft 34 formed in the mounting portion 42c and screwed into a female screw of the mounting portion 40d of the turning case 40a.

On the other hand, the protrusion 42b is provided in the mounting body 42 in the radial direction, and the screw 44 is circumferentially screwed into the tip portion thereof. The head contacts the turning case 40a to form an engaging portion 40c. When the bolt 43 is loosened and the screw 44 is turned, the lead of the screw 44 slightly moves the turning case 40a. The rotating case 29 is pushed and rotated in the rotating direction (counterclockwise). Then, when the nut 45 is tightened, its position is held. In this way, using the screws 44, nuts 45, etc.,
An adjusting mechanism A for finely adjusting the rotation of the turning case 40a and the turning case 40a around the turning shaft 34 is configured.

Therefore, when the bolt 43 is loosened, the swivel case 40a can be rotated about the swivel shaft 34 by a predetermined amount. With the bolt 43 loosened, the adjusting mechanism A adjusts the position of the swivel case 40a. Then, when the bolt 43 is tightened, the swivel case 40a is firmly fixed to the mounting body 42. Then, the sun gear 31 is engaged and fixed to the fixed metal 30 so that the planting claw 40b has a slightly horizontal posture in which the tip is raised in the upper part during turning, and is in a vertical posture in which the tip is downward in the lower part. ing.

As shown in FIGS. 3 and 4, the pushing claw 48 fixed to the lower end of the push rod 47 is designed to move up and down at the lower abdomen of the planting claw 40b. Shaft 38 integrated with cam 39
Extends rightward from the swivel case 40a, and its end is fixed to the rotary case 29 by a claw. That is, the rotating case 2
When the 9 rotates, the planet gear 33 rotates with respect to the rotating case 29. Therefore, when the swivel case 40a integrated with the planetary gear 33 swivels once around the sun gear 31, the cam 39 integrated with the rotary case 29 moves the swivel case 40a.
For one revolution. Then, this cam 39 has a pin 50
It is connected to the upper end of the push rod 47 by a lever 49 that swings around, and when the planting claw 40a comes to the lower end, the right end of the lever 49 separates from the protruding portion of the cam 39 and the spring 51 pushes down the push rod 47. The pushing claw 48 pushes down the seedling. When the planting claw 40a moves up to a predetermined position, the cam 39
Pulls up the push rod 47.

As shown in FIGS. 3 and 5, when the eccentric body 36 is fixed to each planetary gear 33, the resistance arm 35 is pressed by the spring 37, and the planting claw 40b passes through the seedling intake 27, The tooth shapes of the respective gears 31, 32, 33 are in contact with each other on the same side, and the tip of the planting claw 40b is prevented from moving back and forth due to the backlash of the gears. Next, the operation of the above example will be described. When seedlings are placed on the seedling mounting table 20 and each part is driven by the prime mover 10, the traveling vehicle body 1 is propelled by the rotation of the front wheels 5 and the rear wheels 7, and 18 parts of the seedling planting device are operated. Part of the load is received by the leveling floats 22, 23, and 23 and pulled, and the power is transmitted from the front transmission case 3 side to the input shaft in the transmission case 19 via the transmission shaft. In this way, the power is transmitted from the input shaft in the transmission case 19 to the drive shaft 28 via an appropriate transmission route. Then, each rotating case 29 rotates, the intermediate gears 32, 32 are planetarily rotated around the sun gear 31, and the planetary gears 33, 33 meshing with the intermediate gears 32, 32 are rotated.

Therefore, the rotating shafts 34, 34 are rotated by the planetary gears 33, 33.
Although the rotational speed is the same as that of 9, the rotational peripheral speed thereof fluctuates and is rotated with a deviation. The reason is that the sun gear 31, the intermediate gears 32 and 32, and the planetary gears 33 and 33 are eccentric gears, and the sun gear 31 and the planetary gear 33 have the same number of teeth.

Therefore, the swivel case 40a attached to the swivel shaft 34 via the mounting body 42 swings with respect to the rotary case 29, and the tip of the planting claw 40b attached to the swivel case 40a is moved. The planting locus to draw is a closed loop that is long in the vertical direction. And this planting claw 40b
Intervenes downwardly from above into the seedling dividing opening 27 of the seedling receiving frame 26 on the seedling mounting table 20 side, and the seedlings for one stock fed out here are split and engaged and moved downward. At this time, the upper surface of the seedling is received by the pushing claw 48. The seedling thus carried to the soil surface is extruded into the soil by the downward movement of the pushing claw 48 provided at the tip of the push rod 47 operated by the cam 39 and planted.

Next, a means for changing and adjusting the seedling division amount will be described. When reducing the seedling division amount, first, bolt 43
・ Loosen 43. Next, loosen the rotation-preventing nut 45 and rotate the screw 44 to engage the engaging portion 40 with the turning case 40a.
By moving c, the swivel case 40a is rotated in the rotation direction of the rotary case 29 around the axis with respect to the mounting body 42, and the tip of the planting claw 40b is adjusted to swing downward. Then, after the adjustment, the rotation preventing nut 45 is tightened and the both are fixed by the bolts 43.

Next, when the seedling division amount is increased, after loosening the bolts 43 and 43 and the rotation-preventing nut 45, first, the seedling division amount is increased (the rotation direction of the rotating case 29). (Conversely) the swivel case 40a is excessively rotated. After that, the screw 44 is turned to move the engaging portion 40c with the swivel case 40a, and the swivel case 40a is attached to the mounting body 4.
The rotation case 29 is rotated around the axis with respect to 2 in the rotation direction of the rotation case 29, and the tip of the planting claw 40b is adjusted to swing downward. Then, after the adjustment, the rotation preventing nut 45
Tighten and fix them with bolts 43.

If resistance is exerted on the planting claw 40b at the time of seedling division and planting, a rotational reaction force is applied to the swivel case 40a and the bolt 4 is applied.
When 3.43 loosens and the seedling division amount gradually increases and becomes extremely extreme, a situation in which the planting claw 40b collides with the seedling receiving frame 26 occurs, but according to the fixing after the adjustment as described above, the fine adjustment is performed. Can be performed accurately and the screw 4 of the adjusting mechanism A can be
4 also functions as a stopper that prevents the swiveling case 40a from rotating due to the rotational reaction force, and the seedling division amount does not unexpectedly change even after long-term use, and an appropriate seedling planting operation is performed.

[Brief description of drawings]

[Fig. 1] Overall side view of the riding rice transplanter

[Fig. 2] Overall plan view of a riding-type rice transplanter

[Figure 3] Plan view of the seedling planting device

[Fig. 4] Partial cross-sectional side view of the seedling planting device

FIG. 5 is a side view of the inside of the rotating case.

FIG. 6 is a plan view of a main part of the seedling planting device.

[Explanation of symbols]

20 seedling mounting table 28 drive shaft 29 rotating case 31 sun gear 33 planetary gear 34 swivel axis 40a swivel case 40b planting claw 40c engaging part 40d mounting part 42 mounting part 42c mounting part 43 fixing tool (bolt) 44 screw A adjusting mechanism

Claims (1)

[Claims] 1. A rotating case 29, in which a plurality of planetary gears 33, 33 are arranged to rotate around the sun gear 31 in the same posture, is fixed to a drive shaft 28, and each planetary gear 3 is fixed.
The swivel case in which the mounting bodies 42, 42 are fixed to the swivel shafts 34, 34 that swivel integrally with the 3.33, on the side of the rotating case 29, and the mounting bodies 42, 42 have planting claws 40b, 40b. 40a and 40a are fixed around the swivel shafts 34 and 34 so as to be rotatable and adjustable, and the planting claws 40b and 40b swivel in a similar posture as the rotary case 29 rotates, and the seedling mounting table. In the seedling planting device that operates so as to take seedlings one by one from the seedling placed on 20, the swivel shafts 34, 34 are provided between the mounting bodies 42, 42 and the swivel cases 40a, 40a.
There is provided an adjusting mechanism A / A having a function as a stopper that finely adjusts the relative positions of the two to rotate and also receives a reaction force at the time of seedling planting of each of the swivel cases 40a and 40a. Each swivel case 40a ・ 40a
The mounting portions 42c, 42c, 40 are positioned so as to be located on both sides of a line connecting the engaging portions 40c, 40c with the swivel shafts 34, 34.
d ・ 40d for each mounting body 42 ・ 42 and each swivel case 40a
.40a and the mounting portions 42c, 42c,
A seedling planting device characterized in that 40d and 40d are fixed by fixtures 43 and 43.