JPS61282008A - Transplantation apparatus - 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 (Industrial Application Field) The present invention relates to a transplanting device for a rice transplanter, a vegetable transplanter, or a young seedling transplanter for transplanting just-germinated seed blocks.

(Prior Art) Conventionally, as disclosed in Japanese Patent Publication No. 49-17808, there is a rotating case attached to a drive shaft rotatably supported on the transmission case, and a rotating case located inside the rotating case on the transmission case side. A first planetary gear that meshes with the sun gear and a second planetary gear that meshes with the first planetary gear are provided in the rotating case, and a crank mechanism is provided on the second planetary gear. A groove is provided for driving the operating crankbin, and this crank spindle protrudes outside the rotating case.
A cam mechanism, which is fixed to the main body of the transplanter and operates the seedling holding and releasing mechanism of the transplanter, is provided on the outside of the rotating case, on the side where the transplanter is attached.

(Problems to be Solved by the Invention) In the conventional transplant device, the sun gear housed inside the rotating case and the planetary gears that are transmitted and rotated have their supporting shafts relative to the pitch circle of the gear. Since the implant is not eccentric due to the rotation of the rotating case, it is necessary to provide a drive shaft for the implant to which the implant main body, which rotates with a deviation from the rotation of the rotating case by a crank mechanism, is attached to the second planetary gear located on the outer circumferential side of the rotating case. When the main body of the transplanter is driven by this crank mechanism, there is a problem that there is a large backlash in the rotating direction of the drive shaft of the transplanter, which causes the seedling tank to be pushed into the tank incorrectly when dividing the seedlings from the tank. Since the cam mechanism for releasing seedlings is provided between the transplanter and the main body of the transplanter, the structure of the transplanter is not compact, but the structure of the main body of the transplanter is complicated, and the sealing structure of the cam mechanism is particularly complicated. There was a problem.

(Technical Means for Solving the Problems) The present invention has taken the following technical means for solving the problems of the prior art.

That is, the present invention protrudes a drive shaft (5) that is transmitted and rotated to the side of a transmission case (4) of a transplanter, and this drive shaft (5)
The rotating case (26) is attached so that it can be rotated by one body weight, and the rotating case (26) is eccentric (a) with respect to the axis (a) of the drive shaft (5).
The sun gear (28) is fixed to the transmission case (4), and the sun gear (28) is attached to the rotating case (26).
), and a shaft (30a) that is provided inside the rotary case (26) and directly meshes with the sun gear (28).
A first planetary gear (30) supported by a cylindrical shaft (31a) and a second planetary gear (31) supported by a cylindrical shaft (31a) meshing with the first planetary gear (30) are provided. ) protrudes outward from the rotating case (28), and the case (32a) of the transplanting tool main body (A), which is provided with a seedling release mechanism (B) for releasing seedlings during seedling transplantation, is attached to this in one piece. A cam mounting shaft (38) that controls the operation of the seedling release mechanism (B) is inserted into the cylindrical shaft (31a) so that its base side is positioned inside the rotating case (26). The transplanter has a configuration in which a cam mechanism (C) for operating the seedling release mechanism (B) is provided between the base end of the cam attachment shaft (38) and the rotating case (28).

(Operation of the invention) When the rotating case (26) is rotated in a certain direction as the drive shaft (5) rotates, the sun gear (28), which is eccentrically attached to the drive shaft (5), rotates. Accordingly, the first and second
The planetary gears (30) and (31) are driven and rotated. Therefore, the cylindrical shaft (31a) of the second planetary gear (31) rotates quite naturally with its rotation varying between high and low speeds without any special rank mechanism. For this purpose, the implant main body (
A) will draw an operating locus different from an elliptical perfect circle. That is, the transplanting claws appropriately attached to the main body (A) of the transplanting tool draw a long loop locus in the vertical direction to divide the seedlings from the seedling tank side and transplant the seedlings to the soil surface below. At this time, the movement of the transplanting tool body (A) is not transmitted through the crank mechanism as in the conventional case, so the movement is smooth and accurate without any wobbling, and the posture of the seedlings when transplanting them in sections is correct. It becomes almost constant. In addition, a cam mounting shaft (38
) passes through the cylindrical shaft (31a) and connects the rotating case (26
), and the cam mechanism (C) is configured here, which not only makes it possible to install the implant body (A) compactly, but also simplifies the configuration of the seal of the cam mechanism (C). Furthermore, since the transplant main body (A) is provided on the outside of the rotating case (26) and the cam mechanism (C) is provided on the inside, the left and right balance with respect to the rotating direction is good, and the rotating case (26) can be smoothly rotated. It will undergo rotation.

(Effect of the invention) By the above-mentioned technical means, the present invention provides a transplant device main body (71
) not only moves accurately without wobbling, resulting in accurate transplantation operation, but also allows the attachment of the transplant device main body (A), which is attached to the one-turn case (26), to be performed at the component part of the cam mechanism (C). Since the rotating case (26) is not rotated, the structure can be made compact, and the cam mechanism (C) of the transplant device main body (A) is provided on the left and right sides of the rotating case (26). ) has the effect of enabling transmission rotation in a well-balanced manner.

(Embodiment) An embodiment of the present invention will be described in detail based on the drawings. (1) is a transplanted transmission case, with an elevating link mechanism (2) and a rolling shaft (3) on the towing vehicle body (not shown) side. It is mounted so as to be vertically and rotationally movable via the lead cam and the lead metal, and transmission members such as a left-right reciprocating mechanism made of a lead cam and a lead metal, a clutch mechanism, etc. are housed inside.

(4) is a vertical transmission case in which a transplant device, which will be described later, is attached, and a drive shaft (5) that is transmitted by a checker 7 is provided at the rear end, and this drive shaft (5) protrudes outward from the left and right. It is supported. (6) indicates a sprocket.

(7) is a seedling tank, which is formed by left and right side frames (8) and a bottom plate (8), and the bottom plate (9) has a bell for vertically feeding the seedlings.
(10) is stretched.

(11) is a metal fitting for supporting bell) (1G) on the bottom plate of the seedling tank (7), and this metal fitting (11) is attached to winding rolls (12), (13) and tension roll (10).
, (14), - are attached.

The metal fitting (11) of this seedling tank (7) is attached to the slider member (
17) and (18).

(19) is a support frame to which a support rail (15) is attached.

(20) is a moving rod, which is a member attached to the reciprocating lateral movement mechanism in the transplanted transmission case (1) and attached to the moving shaft (21) that protrudes outward from the case (1) and reciprocates. This moving rod (20) is connected to the metal fitting (11), and the seedling tank (7) is configured to reciprocate from side to side.

(22) is a ratchet arm, and the winding roll (12) is a ratchet arm.
), and this arm (22) operates the rotor (23) rotated by the outer part of the transplant transmission case (1) and the seedling tank (7) when it moves to the side end. The winding roll (12) is engaged with the winding roll (12) and rotated therethrough.

(20 is a seedling receiving frame, which is an L-shaped frame that is located at the lower end of the seedling tank (7) and receives the lower end and back side of the seedlings accommodated in the seedling tank (7). There is a seedling dividing opening (25), (25)・φ・ drilled in this.

Reference numeral (26) denotes a rotating case, which is attached to the square shaft portion with the tip side of the drive shaft (5) as a square shaft, and is configured to rotate integrally with the drive shaft (5).

(27) is a metal member, which is fastened to the vertical case (0) with bolts, supports the drive shaft (5) via a bearing, and has a metal tip end extending into the rotating case (26). 28) is a sun gear, which is housed in the rotating case (26), is fixed to the metal (27) with a key (28) so as not to rotate, and is set at a pitch relative to the drive shaft (5). The axial center (a) of the drive shaft (5) and the center (a) of the sun gear (28) are provided so as to be offset from each other so that the circle is eccentric.

(30) is an eccentric first planetary gear with an integrated shaft (30a)
The sun gear (28) is supported within the rotating case (26) at
) are meshed with each other.

(31) is an eccentric second planetary gear in which a cylindrical shaft (31a) is integrally provided, and the first planetary gear (30)
The cylindrical shaft (31a) has one end protruding to the outside of the rotating case (26).

(A) is the transplant device main body, and the transplant device case (32a)
It consists of a mounting metal (32b), a key (32c), etc., and an inverted U-shaped seedling division transplant claw (33) is attached to the front end of the case (32a).

(B) is a seedling release mechanism, which in the illustrated example is a seedling pushing fork (34) that operates to rapidly release the seedling held by the transplant claw (33) at the time of seedling transplantation.

This seedling extrusion fork (30) has a fork piece (34b) attached to the tip of a vertically movable rod (34a), and the upper end of the rod (34a) is inside the case (32a) and is interlocked. It is attached to the member (3B), and
The base end of the interlocking member (3B) is connected to the cam mounting shaft (3B), which will be described later.
8) is attached in one piece.

The cam mounting shaft (38) is inserted into the cylindrical shaft (31a) and extends to the inner wall of the one-turn case (28).

(C) is a cam mechanism, which is constructed as follows between the base end of the cam mounting shaft (38) and the inner wall of the rotating case (26). That is, a cam fitting portion is formed on the inner wall surface of the rotating case (2e), and a cam wall surface (c) is formed on the inner peripheral portion of the rotating case (2e).
The cam body (37) having a cam body (37) is fitted and fixed with a pin to prevent rotation. On the other hand, a cam floor (35) is fixed to the cam mounting shaft (38), and when the rotating case (26) rotates, the protrusion of the cam floor (35) is fixed to the cam body (38).
37) is engaged with the stepped part of the cam wall surface (c) and the cam mounting shaft (
38) is configured to rotate. (39) is a spring interposed between the rod (34a) and the case (32a), which biases the extrusion fork (30) so that it is always pushed upward. 3
B) is configured to hold the projection of the cam floor (35) in a fixed position, and the stepped portion of the cam body (37) is connected to the cam floor (35) when the extrusion fork (30 is in the raised position). The push-out fork (34) is pressed down against the spring (39).

In addition, (40) in the figure shows the leveling float.

Next, the operation of the upper side will be explained.

Seedlings are stored in the seedling tank (7), and the towing vehicle body pulls the transplanter side (40) in contact with the topsoil of the paddy field, while transmitting power to each operating part in the transplanting transmission case (1). Communicate.

Then, the seedling tank (7) is reciprocated from side to side, and the lower ends of the seedlings in the seedling tank (7) are received by the seedling receiving frame (24) and slid into contact with each other. Then, the lower part of the seedlings are fed out one after another into the seedling dividing opening (25).

On the other hand, when the rotating case (26) is rotated by the drive shaft (5), the first planetary gear (30) and the second planetary gear (31) inside the rotating case rotate while rotating around the sun gear (28). and a cylindrical shaft (
31a) causes the implant main body (A) to be rotated. In addition, the cam body (37) is rotated integrally with the rotation case (26), and the cam floor (
35) is activated when the transplanting claw (33) divides the seedling from the seedling dividing opening (25), reaches the lower part, and transplants it into the soil;
The fork (34b) serves to release the seedling from the graft claw (33).

Then, when the transplanted claw (33) is pulled out from the soil surface, the step part of the cam body (37) and the protrusion part of the cam floor (35) are removed, and the extrusion fork (34b) is lifted upward by the spring (39). It will move and stop.

That is, the lower end of the transplant claw (33) is operated while drawing the transplant trajectory (d), but when the transplant claw (33) intervenes into the seedling tank (7) from above, the extrusion fork (34) stops. This state was maintained until the pawl (33) plunged into the topsoil surface of the paddy field, and when the claw (33) plunged into the topsoil surface, the extrusion fork (34b) rapidly moved downward by the cam mechanism (C) and was clamped. Seedlings will have to be separated. After that, when the transplanted claw (33) begins to move upward, it is pulled up again by the extrusion fork (34b) or the spring (38), and comes to a halt when it plunges into the seedling tank (7).

In this way, two seedling transplants A-r @ Seedling division opening (25)
The seedlings that are fed out are divided one after another and transported to the soil surface and transplanted.

As described above, in the embodiment of the present invention, the transplanter main body (A)
is accurately operated by a gear in the rotating case and moves without rattling, and the seedling release mechanism (B) is operated by a cam installed on the inner wall of the transmission case (4) in the rotating case (26). Since it is operated by mechanism (C), the structure is compact and it operates smoothly.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan sectional view, Figs. 2 and 3 are side sectional views of the main parts, Fig. 4 is a side view, and Fig. 5 is a side sectional view. FIG. 3 is a plan view of main parts. Symbols in the figure: (4) is the transmission case, (5) is the drive shaft, (2)
8) is the rotating case, (2nd) is the sun gear, (30) is the first planetary gear, (30a) is the shaft, (31) is the second planetary gear, (31a) is the cylindrical shaft, (32a) is transplant case,
(38) shows the cam attachment shaft, (A) shows the transplanter body, (B) shows the seedling release mechanism, and (C) shows the cam mechanism.

Claims (1)

[Claims] A drive shaft (5) that is transmitted and rotated is protruded from the side of the transmission case (4) of the transplanter, and a rotating case (26) is attached to the drive shaft (5).
) are installed so as to integrally rotate through transmission, and the drive shaft (5
) The sun gear (2) is eccentric (b) with respect to the axis (a) of
8) is fixed to the transmission case (4) side, and the sun gear (28) is installed inside the rotating case (26).
A first planetary gear (30) supported by a shaft (30a) that directly meshes with the first planetary gear (30) and a second planetary gear (31a) supported by a cylindrical shaft (31a) that meshes with the first planetary gear (30). 31), the cylindrical shaft (31a) projects outward from the rotating case (26), and a seedling release mechanism (B) for releasing seedlings during seedling transplantation is provided thereon. A) case (
32a) is integrally attached, and a cam mounting shaft (38) that controls the operation of the seedling release mechanism (B) is inserted into the cylindrical shaft (31a) so that its base side is inside the rotating case (26). the seedling release mechanism (B) between the base end of the cam attachment shaft (38) and the rotating case (26).
) A transplanter equipped with a cam mechanism (C) that operates.