JPH0665255B2 - Transplant device - Google Patents

Description

The present invention relates to a rotary type seedling transplanting device.

[Conventional technology]

In order to reduce vibration and improve the efficiency of seedling transplantation, it has been proposed to use a rotary transplantation device instead of the conventional crank type seedling transplantation device.

In this rotary type transplanting device, a pair of planting claws alternately pass through the take-out port of a single seedling, so the rotation speed of each planting claw is kept at the conventional speed, and the vehicle speed of the seedling transplanting machine is kept. The seedling transplantation work can be performed efficiently without increasing damage to the seedlings.

In order to materialize this, Japanese Patent Application Laid-Open No. 60-2442
The following configuration is proposed in Japanese Patent No. 15:

That is, an extruding claw that moves up and down is provided at the lower end of the planting claw, and the extruded body is pushed downward by a spring at the lower end of the swiveling claw of the planting claw, and the seedlings held by this are pushed out into the mud. Then, this spring is provided upward in the middle of the lever swung by the cam.

[Problems to be Solved by the Invention]

Here, the strength of the spring that swings the lever depends on the distance from the position of the spring to the swing center of the lever, and as in the prior art, the spring provided in the middle of the lever swings the lever. A stronger spring than the spring provided at the tip (extruder side) is required.

In addition, in the rotary type transplantation device, a pair of planting cases rotate in a similar trajectory. Then, when one planting case is descending, the other planting case then rises, and the tip of the planting claw provided on the other planting case extends from the back surface to the top surface of the one planting case. Pass by passing the plane of.

Therefore, as in the prior art, when the middle part of the upper surface of the spring case projects greatly upward in order to receive a strong spring, the circumference of the rotating case to which the pair of planting cases is attached has a large diameter. Then, there was a problem that everything became larger.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a pair of planetary gears that rotate around the sun gear 38 in the same posture.
41, 41 are arranged in the rotating case 28, so that the pair of planting cases 44, 44 having the planting claws 48, 48 operate integrally with the planetary gears 41, 41 laterally of the rotating case 28. Is provided,
Cams 45, 45 that rotate integrally with the rotating case 28 are housed in the planting cases 44, 44, and an extruded body is provided at the lower end of extruding rods 47, 47 that move vertically behind the planting claws 48, 48. 47a, 47a are provided,
The push rods 47, 47 are cammed by levers 46, 46 so that the push rods 47, 47 can be pulled up in the ascending stroke of the planted cases 44, 44 during turning.
The springs 51,51 that are linked to the 45,45 and push down the push rods 47,47 at the lower end of the turning are the upper part of the push rods 47,47 and the planting case.
It is provided between the spring cases 44a, 44a and the inner surfaces of the spring cases 44a, 44a fixed to the rear surfaces of the spring cases 44a, 44a so that the tips of the other planting claws 48, 48 can pass therethrough. The implanting device is characterized by having a low posterior shape.

[Action]

In the transplantation device configured as described above, when the drive shaft 35 is rotated by the power of the prime mover, the rotating case 28 fixed to the drive shaft 35 is rotated in the same direction. At this time, the pair of planetary gears 41, 41 arranged on the outer peripheral portion of the rotating case 28 are linked to the sun gear 39, which is the center of rotation, and maintain a similar posture with respect to the ground to rotate around the sun gear 39. To turn. Here, since the pair of planting cases 44, 44 also operate integrally with the planetary gears 41, 41, they rotate in the same posture as the planetary gears 41, 41. on the other hand,
The respective cams 45, 45 rotate integrally with the rotating case 28. Therefore, when the planted cases 44,44 turn once,
The cams 45, 45 rotate once for each planting case 44, 44. Then, the cams 44,44 swing the levers 46,46,
When the planted case 44,44 is turning and comes to the lower end, the spring 51,
51 pushes down each push rod 47, 47, and after this position, the levers 46, 46 resist the springs 51, 51 and push rods 47, 4
Pull up 7.

In other words, the tips of the planting claws 48, 48 provided on the planting cases 44, 44 are located above the outlet 27 where the seedlings are moving sideways with the bed soil alternately at the beginning of the downward stroke of the turning. From the bottom to the bottom, the seedlings are cut off together with the floor soil and held by the tip and the extruded bodies 47a, 47a, and the extruded bodies 47a, 47a are pushed down by the extruding rods 47, 47 in the mud at the lower end and held. The above seedlings were transplanted to mud.

Since the transplanting of the above-mentioned seedlings is alternately performed by the pair of planting claws 48, 48, while one planting claw 48 descends, the other planting claw 48 rises. Since these planting claws 48, 48 operate in a similar trajectory, the tip end of the other planting claw 48 that is rising is from the back surface to the top surface of the one spring case 44a that is descending. Pass through the surface as if passing each other.

〔effect〕

Here, according to the present invention, the spring 51 that pushes down the extruding body 47a is provided above the extruding rod 47 to which the extruding body 47a is attached. Therefore, the force of the spring 51 acts on the extruding rod 47 without twisting. Thus, the push rod 47 operates smoothly. Further, since the spring 51 is provided at a position away from the swing center of the lever 46, the repulsive force may be small and the size can be reduced. As a result, the upward protrusion of the spring case 44a for receiving the spring 51 is small, and in addition to this, the spring case 44a receiving the spring 51 has the rear portion of the protrusion protruding upward for receiving the spring 51. In other words, since the protruding portion for receiving the spring 51 provided in the spring case 44a has a small shape and a rear portion is cut off, The tip of the planting claw 48 of the planting case 44 can be passed through this cutout portion, and the rotating case 28 and the planting case 4
There is a feature that the 4,44 etc. can be miniaturized.

〔Example〕

 Next, examples of the present invention will be described.

As shown in FIGS. 4 and 5, 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 seedling planting machine.

The traveling vehicle body 1 is configured as follows. A pair of gear boxes 3 and 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 gear box 3, a pair of transmission cases 6 extends rearward from both sides of the gear box 4, rear wheels 7 are attached to respective rear ends thereof, and the rotation of the prime mover 10 is prevented. The front wheels 5 and the rear wheels 7 reach through the gear boxes 3 and 4, and these are rotated on a paddy field in the paddy field so that the traveling vehicle body 1 can propel them. A prime mover 10 is covered with a hood 11, and a seat 12 is provided on the hood 11. The post 8 extends upward at the tip of the machine frame 2 and the handle 9 on it extends.
When 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 front ends of the upper link 15b and the pair of lower links 15a are rotatably attached to the respective links 15a, 15b.
The mounting frame 16 at the rear end is designed to be moved up and down by a hydraulic cylinder 17.

The seedling planting device 18 is configured as follows. The planted transmission case 19 is rotatably attached to the tube 24 of the attachment frame 16 by the rolling shaft 25. A seedling stand 20 is provided on the planting transmission case 19 in a forward tilt, and five mat seedlings are placed side by side and can be moved back and forth from side to side.

A seedling receiving plate 26 having an L-shaped section is fixed to the planting 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 can be moved left and right on this. ing. Five take-out holes 27 are provided in the seedling receiving plate 26, and the planting nails of the transplanting device 21 are provided.
48 pass through each outlet 27 from top to bottom to cut off the edge of the mat seedling. Central float 22 and a pair of side floats 23, 23 with planted transmission case 1
It is arranged below 9 and slides on the mud surface by the forward movement of the traveling vehicle body 1, and each planting claw 48 preliminarily prepares the soil for transplanting the seedlings. The planted transmission case 19 includes a front main planted transmission case 19a, downward sub-cases 19b, 19b, 19b, and three vertical cases 19c extending from the seedling receiving frame 26. It is made of 19c.

The drive shafts 35, 35, 35 that rotate by receiving the power of the prime mover 10 are laterally attached to the vertical cases 19c, 19c, 19c, respectively, and the central drive shaft 35 projects to the left and the left and right drive shafts 35, 35. Is
Rotating case 2 protruding on both sides and at each tip
8 and 28 …… are fixed, and 5 sets of transplantation devices 21, 21 …… are constructed. The following is the same or symmetric, so one of them will be described.

As shown in FIG. 1, the power of the prime mover 10 is transmitted to the gear 31 by the chain 30, and then reaches the drive shaft 35 by the gears 32, 32, 34. The surface of the rotary case 28 on the side far from the vertical case 19c is attached to the projecting end of the drive shaft 35 with the key 36, and both are rotated by the power of the prime mover 10. Sun gear
38 is mounted in the rotating case 28 so as to be fitted onto the drive shaft 35, and its right end is engaged with the fixed metal 37 fixed to the vertical case 19c by the key 39 so as not to rotate. A pair of planetary gears 41, 41 are evenly arranged on the outer periphery of the rotating case 28, and the intermediate gears 40, 40 of the planetary gears 41, 41 are the sun gears 3 respectively.
6 bite. The sun gear 38 and the planetary gears 41, 41 are configured to have the same number of teeth, and when the rotating case 28 rotates, the planetary gears 41, 41 maintain a similar posture with respect to the ground and rotate around the sun gear 38. It is designed to turn. The sun gear 38 is provided such that its rotation center (a) is eccentric with respect to the center of the pitch circle, and the intermediate gears 40, 40 and the planetary gears 41, 41 are also eccentrically provided in the same manner, and each of them always meshes. ing. Therefore, the sun gear 38
Since the pitch circle is eccentric to the center of rotation,
The non-uniform velocity motion is transmitted to the intermediate gears 40, 40, which are the planetary gears 41,
It is transmitted to 41.

The planting shafts 41a, 41a, which are integral with the planetary gears 41, 41, extend leftward from the rotating case 28, and the seedling planting devices 29, 29 are attached to the tips thereof. That is, the planting cases 44, 44 are fixed to the tips of the planting shafts 41a, 41a by the cotters 49, 49. The pair of planting cases 44, 44 are designed so that the downward planting claws 48, 48 are turned toward the seedling table 20 side (FIG. 2) in the same posture. Then, the sun gear 38 and the intermediate gears 40, 40 are arranged so that the planting pawls 48, 48 are in a slightly horizontal posture with the tip being raised in the upper part during turning, and in the vertical posture with the lower part facing downward in the lower part. The tips of the planting claws 48, 48 rotate on the orbit C shown in FIG. 2 due to the non-uniform velocity motion of the planetary gears 41, 41.

As shown in FIG. 2, the extruded bodies 47a, 47a fixed to the lower ends of the extruded rods 47, 47 are vertically movable behind the lower part of the planting claws 48, 48.

As shown in FIG. 1, the cam shaft 42,
42 is arranged, the right end thereof is fixed to the side wall of the rotating case 28 by the plates 43, 43, and the cams 45, 45 are fixed inside the planting cases 44, 44 at the left end. That is, when the rotating case 28 rotates, the planetary gears 41, 41 do not rotate with respect to the ground but the camshafts 42, 42 rotate, so that the planted cases 44, 44 rotate,
The cams 45, 45 rotate with respect to the planted cases 44, 44.

The levers 46, 46 are swingably provided in the respective planting cases 44, 44 A by means of pins 50, 50, and both ends thereof are the push rods 47, 4 described above.
It is engaged with the upper part of 7 and the cams 45, 45. Springs 51, 51 are provided on the push rods 47, 47 to push down the push rods 47, 47. Then, when the tips of the planting claws 48, 48 come to the lower end on the track C, the ends of the levers 46, 46 are disengaged from the cams 45, 45 and the springs 51, 51 are released.
Pushes down the push rods 47, 47, and past this position, the cam 4
5,45 turns levers 46,46 clockwise, springs 51,51 are compressed and push rods 47,47 are pulled up.

Spring cases 44a and 44a are fixed on the planted cases 44 and 44, and the upper inner surfaces of the spring cases 44a and 44a support the upper ends of the springs 51 and 51. The cam side of the upper surface of the spring cases 44a, 44a is formed into slopes d and d having a shape lower than the spring side (a shape with a lower rear), and one of the slopes is placed on the other side as shown in FIG. The end of the planting claw 48 is passed so that it passes each other. That is, the prior art (JP-A-60-244215)
According to the Japanese patent publication), the spring 51 is large and located in the middle of the lever 46, and the upper surface of the case 44a is parallel to the lower surface. In order to avoid the above, the planting case and the lever are bent intricately when viewed from above, and the spring 51 is removed from the rotating surface of the pushing rod 47.However, according to the embodiment of the present invention, the position of the spring 51 does not need to be displaced. , These are compactly constructed.

Therefore, with the miniaturization of the rotating case 28 and the planting cases 44, 44, etc., the entire seedling planting machine can be made compact and lightweight, and an excellent seedling planting machine with good paddy field running performance can be obtained. .

[Brief description of drawings]

FIG. 1 is a cutaway plan view of a part of a seedling planting machine according to the present invention,
FIG. 2 is a cutaway side view of a part thereof, FIG. 3 is a side view showing its operating state, FIG. 4 is a side view of the seedling planting machine, and FIG. 5 is its plan view. Explanation of symbols 27 …… Extraction port, 28 …… Rotating case 35 …… Drive shaft, 38 …… Sun gear 41 …… Planet gear, 44 …… Planting case 44a …… Spring case, 45 …… Cam 46 …… Lever, 47 ... Extrusion rod 47a ... Extrusion body, 48 ... Planting claw 51 ... Spring

Claims (1)

[Claims] 1. A pair of planting gears having a pair of planetary gears 41, 41 which rotate around a sun gear 38 in the same posture and which are arranged in a rotating case 28 and have planting claws 48, 48. Cases 44, 44 are provided on the side of the rotating case 28 so as to operate integrally with the respective planetary gears 41, 41, and cams 45, which rotate integrally with the rotating case 28, in the planted cases 44, 44. An extruding body 47a, 47a is provided at the lower end of an extruding rod 47, 47 that houses 45 and moves up and down behind the planting claws 48, 48. The push rods 47, 47 are linked to the cams 45, 45 by levers 46, 46 so that the push rods 47, 47 can be pulled up. , 47 are provided between the upper parts of the spring cases 44a, 44a and the inner surfaces of the spring cases 44a, 44a fixed to the planting cases 44, 44. With the tip passing over it Implant apparatus characterized by rear has a low shape so that.