JPH07112380B2 - Transplant device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an implanting device, and more specifically, to an implanting claw of an implanting device mounted on a rotating case, which is a loop-shaped implanting locus having a long vertical direction. The present invention relates to a transplanting device for drawing seedlings and planting seedlings in a field.

[Prior art]

As a prior application of the present invention, Japanese Utility Model Application No. 59-189784 (Actual Development No. 61)
-104026) and Japanese Patent Application No. 60-52672 (Japanese Patent Application Laid-Open No. 61-212214)
No.) transplant device.

What is shown in this prior application is that the eccentric sun circle gear, the eccentric counter circle gear, and the eccentric planetary circle gear in the rotating case rotate in the opposite direction to the rotating direction of the rotating case at the same number of revolutions and the rotation speed fluctuates. Is a transplantation device in which an implanter is attached to an implanter attachment shaft that is transmitted by a circular gear transmission mechanism according to, and the implanting claw of the implanter draws a long loop-shaped implanting locus in the vertical direction in a side view.

(Problems of the prior art) However, in the transplantation device of the above-mentioned prior application, the circular gear transmission mechanism in the rotating case merely uses the true circle gear to be eccentric from its center to provide the center of rotation for use. Inevitably, the meshing depth of these gears fluctuates greatly during rotation, forcing unreasonable rotation, and large gear play and errors occur in the gear transmission, and the transmission mechanism rotates at high speed during seedling transplantation work. However, the timing of planting the seedlings in the field and the timing of taking out the seedlings from the seedling mounting table varied, and it was not possible to properly transplant the seedlings.

Furthermore, in order to configure a transmission mechanism in which the rotation speed fluctuates with a circular gear with a center or an elliptical gear with a focus as described above, it is necessary to decenter the rotation center greatly from the center and the focus. This is not possible due to increased play and error. Therefore, the looped locus of planting nails can be formed only in a restricted shape, and it is difficult to draw an optimal locus on the theory of seedling transplantation action, and a transplanting device with high seedling transplantation accuracy can be obtained. It cannot be done.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a rotating case 26 in which a planetary gear 31 is provided with a gear transmission mechanism provided so as to rotate around a sun gear 28 in substantially the same posture.
Is fixed to the drive shaft 5, and the implant 33 having the implant claw 34 is fixed to the implant attachment shaft 32 that rotates together with the planetary gear 31, and the tip of the implant claw 34 rotates the rotating case 26. In accordance with the above, in the transplanting device that operates so as to draw a long loop-shaped locus a in the vertical direction and swivel to take out one seedling from each seedling placed in the seedling tank 7 and plant it in a field, The transplant device is characterized in that the gear transmission mechanism of the sun gear 28 and the planetary gear 31 is constituted by a non-circular gear having no center and no focus.

[Action effect]

According to the present invention, the gear transmission mechanism of the sun gear 28 and the planetary gear 31 in the transplantation device is constituted by a non-circular gear having no center and no focus, so that each gear has a meshing depth during its rotation as in the prior application. Can be prevented from causing a large play and error in the gear transmission due to large fluctuations in the gear transmission, and even when rotating at high speed during seedling transplanting work, from the timing of planting seedlings in the field and from the seedling mounting table. There is little change in the timing of taking out seedlings, and good transplanting of seedlings can be performed.

Furthermore, because it is a non-circular gear that does not have a center and a focus, even if a transmission mechanism that sets a rotation center in each gear and the rotation speed fluctuates greatly, a gear transmission mechanism that does not increase play and error in transmission Can be obtained, therefore
An optimal trajectory can be drawn on the theory of seedling transplantation, and a transplanter with high seedling transplantation accuracy can be obtained.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 is a machine frame that also serves as a transplantation transmission case, and is vertically moved to the side of a tow vehicle (not shown) via a lifting link mechanism 2 and a rolling shaft 3. It is rotatably mounted and accommodates a transmission member such as a left-right reciprocating mechanism and a clutch mechanism, which is composed of a lead cam and a lead metal.

4 is a vertical transmission case for mounting an implanting device described later,
A drive shaft 5 that is transmitted by a chain is provided on the rear end side,
The drive shaft 5 is supported so as to project outward in the left and right directions. 6 indicates a sprocket.

A seedling tank 7 is formed of left and right side frames 8 and a bottom plate 9, and a belt 10 for vertically feeding the seedlings is stretched on the bottom plate 9.

Reference numeral 11 denotes a metal fitting for supporting the belt 10 on the bottom plate of the seedling tank 7, to which the winding rolls 12, 13 and tension rolls 14 are attached.

The metal fitting 11 of the seedling tank 7 is movably supported by sliders 17 and 18 by support rails 15 and 16 provided on the machine frame 1 and the vertical transmission case 4 side. 19
Is a support frame to which the support rail 15 is attached.

A moving rod 20 is a member attached to a reciprocating lateral moving mechanism in the transplantation transmission case 1 and attached to a moving shaft 21 which projects outward from the case 1 and reciprocates. The moving rod 20 is the metal fitting. It is connected to 11, and the seedling tank 7 is configured to reciprocate left and right.

Reference numeral 22 is a ratchet arm, which is an arm that operates a ratchet that rotates the winding roll 12. The arm 22 is a rotor 23 that is rotated outside the transplantation transmission case 1 and the seedling tank 7 moves to the lateral end. When the winding roll 12 is engaged
Is provided so as to rotate.

24 is a seedling receiving frame, which is located on the lower end side of the seedling tank 7 and receives the lower end side and the back surface of the seedlings housed in the seedling tank 7.
It is a frame provided in the shape of a mold, and seedling dividing ports 25 ... Are punched in this frame.

Reference numeral 26 denotes a rotating case, which is wedged to the tip end side of the drive shaft 5 so as to rotate integrally therewith.

Reference numeral 27 denotes a metal, which is fixed to the vertical case 4 with a bolt and supports the drive shaft 5 via a bearing, and the metal tip end side extends into the rotary case 26.

28 is a non-circular sun carrier, which is formed by punching an iron plate, molding it with synthetic resin, or forming it with a sintered alloy, etc., such as an eccentric perfect circle gear and an elliptical gear. Instead of a circular gear having a center, a non-circular gear having no center or focus is configured. Then, the boss portion of this sun gear 28 is keyed to the metal 27 by the key 29.
It's fastened.

30 ・ 30 is a non-circular counter gear, rotating case
It is mounted in a shaft 26 and meshed with the non-circular sun gear 28 for planetary rotation. Reference numerals 31 and 31 are non-circular planetary gears, which are fixed to the base side of transplantation mounting shafts 32 and 32, which will be described later, and mesh with the non-circular counter gears 30 and 30 to rotate the planets.

A transplant tool 33 is composed of a transplant case 33a, a mounting metal 33b, and a cap 33c, and an inverted U-shaped planting claw 34 is attached to the front end of the case body 33a.

Reference numeral 35 is a seedling pushing fork that operates to rapidly separate the seedlings held by the planting claws 34 at the time of seedling transplantation, and the upper end side of the vertically movable rod 35a is inside the case body 33a, and the case body 33a. It is attached to an interlocking member 37 which is supported by a pin 36 inside and rotates. A cam floor that contacts a cam body described later is integrally provided at the base end of the interlocking member 37.

Reference numeral 38 denotes a cam body, the outer peripheral surface of which is formed into a spiral portion, a perfect circle portion and a step portion, and the cam body 38 is integrally provided on a tubular cam shaft 39. This cam shaft 39 has the inside of the shaft 32
It is provided so as to be fitted into the case of the rotating case 26 with the outer peripheral surface of the base part as an angular axis, and to rotate integrally with the rotating case 26. The cam 38 is housed in the transplant case 33a.

Reference numeral 40 denotes a cotter pin, which has a square tip at the end of the mounting shaft 32, and is securely fixed to the metal 33b in a fitted state. The metal 33b is the case body 33a.
It is fastened with bolts 41 and 41.

42 is a spring that covers the upper part of the case body 33a.
It is provided in 3c so as to hang down the rod 35a of the seedling extrusion fork 35. 43 indicates a leveling float.

Next, the operation of the above example will be described.

The seedlings are stored in the seedling tank 7, and the transplanter side is towed by the towing vehicle body while the ground leveling float 43 is in contact with the surface soil surface of the paddy field, and the power is transmitted to each operating portion in the transplantation transmission case 1.

Then, the seedling tank 7 is reciprocated right and left, and the lower end side of the seedling in the seedling tank 7 is received by the seedling receiving frame 24 and slides. Then, the seedlings in the lower part are successively fed to the seedling dividing port 25.

On the other hand, when the rotating case 26 is rotated by the drive shaft 5,
The non-circular sun gear 28 in the rotating case meshes with the non-circular counter gears 30 and 30 to rotate.
The non-circular planetary gears 31, 31 meshing with 30 are rotated, and the graft attachment shafts 32, 32 integral therewith are transmission-rotated. Therefore,
The transplant case 33a attached to the shafts 32, 32 via the metal 33b is rotated. Further, since the cam shaft 39 is integrated with the rotating case 26 by the angular shaft fitting, the cam body 38 rotates with respect to the transplant case 33a. Therefore, the cam body 38 rotates with the cam floor of the interlocking member 37 in contact with the cam body 38, and the pushing fork 35 is pulled up against the spring 42 by the rotation of the cam body 38. Then, when the cam floor reaches the step of the cam body 38, the cam 42 is rapidly lowered by the spring 42.

That is, the lower end of the transplanting nail 34 is actuated by drawing a closed-loop-shaped planting locus a which is long in the vertical direction, but when the transplanting nail 34 intervenes in the seedling tank 7 from above, the pushing fork 35 stops and the planting nail 34 is planted. This state is maintained until the claw 34 plunges into the surface soil surface of the paddy field, and when the nail 34 plunges into the surface soil surface, the pushing fork 35 is pushed by the spring 42.
Rapidly descends, and the held seedlings are released. After that, when the planting claw 34 starts to move upward, the push-out fork 35 is pulled up again by the cam body 38 and the interlocking member 37, and when it pushes into the seedling tank 7, it is in a stopped state.

In this way, the seedlings fed to the seedling dividing port 25 by the seedling transplanting devices 33, 33 are sequentially divided into two, and are carried to the soil surface and transplanted.

And, in particular, this implant 33 has a mounting shaft that is transmission-rotated by the non-circular sun gear 28 in the rotating case 26 and the non-circular counter gears 30 and 30 and the non-circular planet gears 31 and 31 that are planet-rotated around the sun gear 28. Since it is attached to 32, by changing the shape of these non-circular sun gear 28, non-circular counter gear 30, and non-circular planetary gear 31, the shape of planting locus a can be freely changed, and planting claw 34 can be Seedling tank 7
Not only the plunge angle when dividing the seedling from the side but also the plunge angle and the exit angle with respect to the soil surface can be freely selected and designed. Moreover, since the meshing of the gears 28, 30, 31 can be configured with less backlash, it is possible to prevent the planting locus a from vibrating, and when the planting claws 34 divide the seedlings and to the soil surface. It is possible to maintain a predetermined and accurate thrusting posture when implanting. Therefore, it becomes possible to draw an optimal trajectory on the theory of seedling transplantation action, and a transplantation device with high seedling transplantation accuracy is obtained.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan sectional view, FIGS. 2 and 3 are side sectional views, and FIG. 4 is a sectional view taken along line AA of FIG. FIG. 5 is a side view, and FIG. 6 is a plan view of an essential part. In the figure, reference numeral 5 is a drive shaft, 7 is a seedling tank, 26 is a rotating case, 28 is a sun gear, 31 is a planetary gear, 32 is a planetary gear mounting shaft, 33 is a grafting tool, 34 is a planting claw, and a is a planting. A trail is shown.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tatsuya Konishi 1-40-2 Nisshin-cho, Omiya-shi, Saitama Inspector, Agricultural Mechanization Research Institute, Jun Koriyama (56) References Y2)

Claims (1)

[Claims] 1. A rotating case 26, which houses a gear transmission mechanism provided so that the planetary gear 31 revolves around the sun gear 28 in substantially the same posture, is fixed to the drive shaft 5 to form a planetary gear 31. The transplant tool 33 having the planting claw 34 is fixed to the transplant tool mounting shaft 32 that swivels as a unit, and the tip of the planting claw 34 is a loop-shaped locus a long in the vertical direction as the rotating case 26 rotates. In the seedling planting device which operates so as to swivel and take out one seedling of each stock from the seedlings placed in the seedling tank 7, the sun gear 28 and the planetary gear are used.
31. An implanting device characterized in that the gear transmission mechanism with 31 is composed of a non-circular gear having no center and no focus.