JPH04356119A - transplant device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting device equipped with a transplanting tool for taking out seedlings one by one from a seedling stand and planting them in a field.

0002

[Prior art and its problems] Conventionally, there is a device that changes the planting density of seedlings by changing the operating speed of the seedling dividing body with respect to the forward speed of the machine, but to change the operating speed of the seedling dividing body There was a problem in that the size of the hole that the seedling splitter made in the field fluctuated, making the planting posture of the seedlings unstable.

0003

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention aims to divide the seedlings placed on the seedling stand 20 into individual plants and to plant them in the field along the trajectory of the seedling dividing body 36. The implantation device is characterized in that it is provided with trajectory changing means for changing the front and back widths of the plunged portion.

0004

Effects of the Invention According to the present invention, since the trajectory changing means for changing the front and rear width of the part of the trajectory of the seedling dividing body 36 that enters the field is provided, the operating speed of the seedling dividing body is changed relative to the forward speed of the machine body. Even when changing the trajectory, the front and rear widths of the part entering the field can be appropriately adjusted by the trajectory changing means, and seedlings can be planted appropriately.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding-type rice transplanter which is an embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 is a passenger towing vehicle, in which a front transmission case 3 and a rear transmission case 4 are provided below a flat control step floor 2, and a front axle case is installed on both left and right sides of the rear side of the front mission case 3. A pair of left and right front wheels 5.5
is installed so that it can be rotated by transmission, and the rear transmission case 4
Transmission cases 6, 6 are attached to the left and right sides, and rear wheels 7, 7 are provided, and a frame 8 to which an operating lever etc. is attached is erected on the front part of the step floor 2, and a handle 9 is attached to this via a steering post. A cover 11 covering an engine 10 is provided behind a handle 9, and a control seat 12 is mounted on the cover 11.

[0006] Numerals 13 and 13 are pillars that are erected at a predetermined interval from side to side on the connecting frame 14 that connects the left and right transmission cases 6, 6. Reference numeral 15 denotes an elevating link, the base sides of a pair of left and right lower links 15a, 15a and a single upper link 15b are pivotally attached to the pillars 13, 13 via pins, and the tip sides are connected by a vertical link 16. The elevating link 15 is configured to be moved up and down by a hydraulic cylinder device 17.

Reference numeral 18 denotes a rice transplanting machine, which is made up of a transmission case 19, a seedling stand 20 that reciprocates from side to side, a transplanting device 21, and leveling floats 22, 23, 23, etc. at the center and sides. The left and right intermediate portions of 19 are the vertical links 16
It is attached to a support body 24 integral with the body via a support shaft 25 so as to be able to roll freely. The transmission case 19 includes a main transmission case 19a and sub-transmission cases 19b and 19b in the vertical direction.
・19b and longitudinal transmission case 19c extending rearward.
It is made up of 19c.

Reference numeral 26 denotes a seedling receiving frame, which extends laterally along the lower end of the seedling platform 20, and has a seedling dividing opening through which the seedlings placed in the seedling platform 20 can be divided. 27, 27... are provided. The transplant device 21 is composed of the following members. That is, a drive shaft 28 protruding outward and laterally is mounted on the longitudinal transmission case 19c so as to be rotated as appropriate, and the distal end of the drive shaft 28 is provided in a square shape. A rotating case 29 is attached to this drive shaft 28. The rotation case 29 is attached by fitting the square shaft portion on the tip side of the drive shaft 28 so that the rotation case 29 is rotated integrally with the drive shaft 28.

[0009] Inside the rotating case 29 are two transmission gear trains A and B using eccentric gears as detailed below.
is provided. That is, the transmission gear train A has the drive shaft 28
A sun gear 31a rotatably provided above, counter planetary gears 32a, 32a that mesh with the sun gear 31a and are rotated by the rotation of the rotating case 29, and a sun gear 32a, 32a that meshes with the counter planetary gears 32a, rotates and is transplanted. Planetary gears 33a, 33a in which tool drive shaft 34 is integrally provided
It is composed of. And the sun gear 31a is
A key 31a is integrally formed with a cylindrical body 30a' having a claw engaging body 30a at one end, and the sun gear 31a is provided so that its center is eccentric with respect to the axis A of the drive shaft 28. It is being The implant drive shaft 34 is elongated toward the side opposite to the transmission case 19, and its tip end is formed into a square shaft 34a.

The other transmission gear train B has the sun gear 31
A sun gear 3 rotatably provided on the cylindrical body 30a' of a.
1b and the counter planetary gears 32b and 32 that mesh with the sun gear 31b and are rotated by the rotation of the rotating case 29.
b, and planetary gears 33b, 33b that rotate in mesh with the counter planetary gears 32b, 32b and are integrally formed with the planetary gears 33a, 33a. A claw engaging body 30b is integrally provided at one end of the sun gear 31b, and the sun gear 31b is provided so that its center is eccentric with respect to the axis A of the drive shaft 28. .

The eccentricity of the sun gear 31a with respect to the drive shaft 28 is set smaller than the eccentricity of the sun gear 31b. Reference numeral 50 denotes an engagement fixing device configured to be able to slide in the axial direction on the drive shaft 28, and is
2 (shaft 51).
When the arm 52 (which is pivotally connected to the longitudinal transmission case 19c) swings, the engaging pawl 50' engages either the pawl engaging body 30a of the sun gear 31a or the pawl engaging body 30b of the sun gear 31b. When engaged, either the sun gear 31a or the sun gear 31b is configured to be fixed to the longitudinal transmission case 19c and rotation can be stopped. Therefore, transmission gear trains A and B
Either one of them becomes idle.

[0012] The above-mentioned engagement and fixing device 50 and transmission gear trains A and B are provided in each implantation device 21, respectively.
All the transplant devices 21 are activated at the same time by operating the operating lever.
The engagement fixing device 50 for... is configured to fix the sun gear of the same transmission gear train. These engagement and fixing devices 50 and transmission gear trains A and B correspond to the locus changing means of the present invention.

Reference numeral 35 denotes a transplanting tool, which includes a transplanting tool main body 35a having a hollow case shape inside, a U-shaped seedling dividing body 36 having a groove 36a made of two needle-like bodies attached to this main body 35a, and a seedling. The extruded body 37 and the interlocking member 3 housed in the case
8. It is made up of a cam body 39, a spring 40, etc. One transplanter 35 is attached to each end of the rotating case 29.

The cam body 39 has a hole through which the implant drive shaft 34 passes, and the boss portion 3
The cam body 9a is elongated and attached to the rotating case 29 in such a manner that it fits into the square hole C, and the cam body 39 is configured to rotate integrally with the rotating case 29. The seedling extrusion body 37 has upper and lower middle parts attached to the transplanter main body 35a so as to be able to freely slide up and down, and a forked fork piece 37a having a groove 37b is integrally fixed to the lower protruding end. There is. The interlocking member 38 interlocks the cam body 39 and the upper end of the seedling pushing body 37, and 41 is its fulcrum pin. and,
When the tip of the seedling dividing body 36 plants a seedling in the soil along its trajectory, the cam floor 38a of the interlocking member 38 corresponds to the cut portion D provided in the cam body 39, and the interlocking member 38 is moved in the direction E by the spring 40. The seedling extrusion body 37 is rotated to rapidly move in the direction.

Reference numeral 42 denotes a mounting bracket for attaching the main body 35a of the transplanter 35 and the transplanter drive shaft 34, and the mounting bracket 42 has a square hole 42a that fits into the square shaft 34a of the drive shaft 34. A bolt insertion hole 42b is formed to be fixed to the outer surface of the transplant main body 35a. The bolt insertion hole 42b is provided in an arc shape with the drive shaft 34 as the center, and the bolt 43 connects the metal fitting 42 to the transplant main body 35a.
When the main body 35a is attached to the drive shaft 34, the main body 35a is configured to be rotatably adjustable around the drive shaft 34.

The mounting bracket 42 and the drive shaft 34 are crimped onto the square shaft 34a by a cotter pin 44 whose circumferential surface is partially tapered in the axial direction, and when the pin 44 is removed, the transplant device is driven. The entire transplant device 35 is configured to be movable and adjustable in the axial direction of the shaft 34. The mounting bracket 42 also has an insertion hole 35 for inserting the transplant tool drive shaft 34 of the transplant tool 35.
An engaging portion 42c that fits into the inner portion 42b is provided. 46 is a ball bearing, and 47 is an oil seal.

Reference numeral 48 denotes a cleaning body made of iron plate, the base of which is fixed to the implant main body 35a with bolts 49, 49, and when the rotating case 29 rotates, the tip thereof is attached to the other implant 35.
The groove 36a of the seedling dividing body 36 and the groove 37 at the tip of the seedling extrusion body 37
It is configured so that it can pass through b. Reference numeral 53 denotes an inter-plant transmission device that changes the number of revolutions of the drive shaft 54 to the rice transplanting machine 18 with respect to the forward speed of the passenger tractor 1, thereby changing the planting density of seedlings. That is, the operating lever 5
3' in the G direction, the rotational speed of the drive shaft 54 decreases, and the seedling planting density becomes coarser. In that case, the static trajectory P1 of the tip of the seedling dividing body 36 of the transplanting device 21 (the engaging claw 50' of the engaging fixing device 50 is connected to the claw engaging body 30 of the sun gear 31a)
a) to stop the rotation of the sun gear 31a and prevent the aircraft from moving forward) becomes a moving trajectory P2 when the aircraft moves forward. Moreover, if the operation lever 53' is operated in the direction H, the number of rotations of the drive shaft 54 increases, and the density of planting of seedlings becomes higher. In that case, the stationary trajectory P1 of the tip of the seedling dividing body 36 of the transplanting device 21 (the engaging claw 50' of the engaging fixing device 50 is engaged with the claw engaging body 30a of the sun gear 31a to stop the rotation of the sun gear 31a). , the trajectory when the aircraft is not moved forward) becomes the trajectory P3 when the aircraft is moved forward.

Next, to explain the operation of the above example, operate the operating lever 53' of the inter-strain transmission 53 in the direction of G, and use the operating lever to move the engaging pawl 50' of the engaging fixing device 50 to the pawl of the sun gear 31a. The sun gear 31a is engaged with the engaging body 30a.
Stop the rotation of the engine 10, place the seedlings on the seedling stand 20, and turn on the engine 10.
When each part is driven, the passenger towing vehicle 1 is propelled by the rotation of the front wheels 5 and rear wheels 7, and the rice transplanter 18 part is partially supported by the load by the soil leveling floats 22, 23, 23 and is towed. Power is transmitted from the front transmission case 3 side into the transmission case 19, and the power is transmitted to the drive shaft 28. Then, each rotating case 29 rotates, and with this rotation, a counter planetary gear 32a is formed around the sun gear 31a.
・32a is planetarily rotated, and a planetary gear 33a meshes with it.
- 33a will be rotated. Therefore, the implant drive shaft 3 provided integrally with the planetary gears 33a, 33a.
4 and the attachment fitting 42, the transplant main body 35a is rotated. Further, the cam body 39, which is integrally attached to the rotating case 29 via the boss portion 39a, is rotated while being shifted from the rotation of the transplant device main body 35a. As a result, the seedling pushing body 37 is moved up and down.

That is, the tip side of the seedling dividing body 36 is at the stationary trajectory P.
1 (movement trajectory P2), and the seedlings that are fed out one after another to the seedling dividing openings 27, 27, etc. of the seedling receiving plate 26 on the seedling platform 20 that reciprocates left and right are divided and sent one after another to the field scene. When the seedling dividing body 36 plunges into the soil surface at the lowest end, the seedling pushing body 37 pushes out the seedling downward by the action of the spring 40 and transplants the seedling.

Since the transplanting tool 35 is stably supported by the transplanting tool drive shaft 34 via the lid 42, accurate seedling planting work is carried out, and the engaging portion 42c of the lid 42
Since it is fitted into the insertion hole 35b of the transplant device 35, the sealing performance of the transplant device 35 is very good. and,
Since the cleaning body 48 is provided to pass through the grooves 36a and 37b provided at the tips of the seedling dividing body 36 and the seedling pushing body 37 of the transplanting tool 35... If a seedling gets caught in the tips of the seedling dividing body 36 and the seedling pushing body 37 of the transplanting tool 35 when dividing the seedling due to some trouble, the pinched seedling can be properly scraped off by the cleaning body 48. As a result, it is possible to prevent the seedlings from becoming improperly planted or missing because the seedlings are not divided properly in the future, and it is possible to continue planting good seedlings.

Next, when seedling conditions or field conditions change and it is desired to plant seedlings more closely, the inter-plant transmission device 53
When the operation lever 53' is operated in the H direction, the drive shaft 54
The number of rotations increases and the density of planting of seedlings becomes denser, but since the moving trajectory of the tip of the seedling dividing body 36 of the transplanting device 21 becomes P3, the width of the hole drilled in the field increases from L1 to L2. The planting posture of seedlings becomes poor. Therefore, the engagement claw 50' of the engagement fixing device 50 is engaged with the claw engaging body 30b of the sun gear 31b using the operation lever to fix the rotation of the sun gear 31b. Then, each rotating case 29 rotates, and with this rotation, the counter planetary gear 3 is placed around the sun gear 31b.
2b and 32b are planetarily rotated, and the planetary gear 3 engages with them.
3b and 33b will be rotated. Therefore, the implant main body 35a is rotated via the implant drive shaft 34 and the mounting bracket 42 that are integrally provided to the planetary gears 33b. Further, the cam body 39, which is integrally attached to the rotating case 29 via the boss portion 39a, is connected to the transplant device main body 35.
The seedling pusher 37 is rotated with a deviation from the rotation a, and therefore the seedling pusher 37 is moved up and down via the interlocking member 38. At this time, since the eccentricity of the transmission gear train B is larger than the eccentricity of the transmission gear train A, the seedling dividing body 36
The trajectory drawn by the tip of the seedling is a narrow stationary trajectory P4, and the moving trajectory P5 is substantially the same as the moving trajectory P2, and the width of the hole drilled in the field becomes narrower, improving the planting posture of the seedling.

[0022] In the above embodiment, the engagement and fixing devices 5 are simultaneously engaged with all the transplant devices 21 by operating the operating lever.
0 has shown an example in which the sun gear of the same transmission gear train is fixed, but an engagement fixing device 5 is provided for each transplant device 21...
It is also possible to provide 0 operation levers and configure them so that they can be operated individually. Furthermore, as shown in Japanese Patent Application Laid-open No. 62-208210 and No. 62-208211, if a plurality of sets of implants are provided in one rotating case, the engagement fixing device 50 and the transmission gear The number of columns A and B will also decrease,
Its configuration becomes simple.

In the above embodiment, the rice transplanting machine 18 is installed at the rear of the passenger tractor 1 and the transplanting device 21 is arranged at the rear of the seedling platform 20. The present invention may be used with any transplanting machine, such as one in which a transplanting device is arranged in front of a seedling stand.

[Brief explanation of drawings]

[Figure 1] Planar sectional view of the implantation device

[Figure 2] Overall side view of riding rice transplanter

[Figure 3] Overall plan view of riding rice transplanter

[Figure 4] Partial cross-sectional side view of the implantation device

[Figure 5] Bottom view explaining the action

[Figure 6] Action explanatory trajectory diagram

[Explanation of symbols]

1 Passenger towing vehicle 1
8 Rice transplanting machine 20 Seedling stand
21 Transplant device 28 Drive shaft 29 Rotating case 31a/31b Sun gear
32a/32b Counter planetary gear

Claims (1)

[Claims] 1. Trajectory changing means is provided for changing the front and back width of the part of the trajectory of the seedling dividing body 36 that divides the seedlings placed on the seedling platform 20 into individual plants and plants them in the field, at a portion entering the field. A transplant device characterized by: