JP2560393B2 - Transplanter planting device - Google Patents

Description

The present invention relates to a planting device provided in a transplanter such as a rice transplanter, and more particularly to a link type drive mechanism for driving a planting rod. .

[Prior Art] A crank, which is provided with a turning fulcrum on a machine frame and imparts a turning motion to the planting rod, and one end of which is connected to the base of the planting rod and the other end of which is pivotally attached to the machine frame. A swinging link is provided, and by rotating both of the trunks, the planting claws of the planting rod draw a long locus vertically and perform a predetermined movement, and divide and grasp the seedlings supplied to the outlet of the seedling tank. Planting devices configured to be planted in a field are widely used for transplanters such as rice transplanters.

A planting device has also been considered in which the locus of the planting claw is crossed by rotating the end of the swing link on the machine frame side so that the planting trace of the seedling becomes small.

[Problems to be Solved by the Invention] By the way, in the planting device having the above configuration, since the planting rod receives the seedlings from the seedling tank at the upper part of the locus and plants the seedlings in the field at the lower end of the locus, the planting device is planted from the seedling tank. In order to facilitate the transfer of seedlings to the attachment rod and to reduce the trajectory of the field in the field, it is desirable that the distance between the upward path and the downward path in the trajectory is wide in the upper part and narrow in the lower part. The development of a planting device that performs various exercises has become an issue.

B Configuration of the Invention [Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, the planting device of the transplanting machine according to the present invention is a planting device having a planting rod for dividing and holding the seedlings in the seedling tank, which is attached to the middle part of the planting rod, A main crank that rotates the planting rod around the base by rotation, and one end that is attached to the base of the planting rod to support the base and the other end that is a swing link that is attached to the sub crank. It is characterized in that the turning radius of the sub crank is smaller than the turning radius of the main crank.

[Operation] Since the end of the swing link on the machine frame side is rotated by the auxiliary crank, the locus of the planting rod crosses in the shape of an 8-shape, and the space between the upward path and the downward path at the bottom of the locus is Can be narrowed.

Further, since the rotation radius of the sub crank is smaller than the rotation radius of the main crank, it is possible to widen the interval between the upward path and the downward path in the upper part of the locus.

[Examples] Examples described in the drawings will be described below.

1 to 4 show an example of a transplanter. In this walk-behind rice transplanter 1, an engine 3 is arranged in the front part of a mission case 2, and a propulsion wheel transmission case 6 is provided on the side of the mission case 2. 6 is provided rotatably in the vertical direction in a rearward direction, and propulsion wheels 7, 7 as a grounding theory for supporting a working machine body are attached to rear ends of the transmission cases 6, 6. A main frame 9 is projected rearward from the rear part of the mission case 2, and a planting part frame 10 also serving as a planting part transmission case is provided at the rear end thereof.
Is provided. A planting device 12 and a seedling tank drive device 13 are attached to the planting section frame 10, and these devices are driven by a transmission mechanism provided inside the frame.
Further, a rear frame 14 is fixedly connected to the rear of the planting part frame 10, and a seedling tank 17 is supported by a rail 15 and a support frame 16 attached to the rear frame 14 so as to be movable in the left-right direction. Seedling tank 15 is seedling feeding conveyor 18
The seedling feed conveyor conveys seedlings downward, and the seedling tank drive device 13 reciprocates the entire tank to the left and right to supply seedlings to an outlet 17a provided at the bottom of the seedling tank. It is like this. Further, a handle rod 19 and an operation panel 20 are attached to the rear frame 14, and various operation levers, switches and the like are provided on these.

A fuel tank 21 and a fertilizer tank 22 are provided on an upper part of the fuselage. The fertilizer in the fertilizer tank 22 is fed to a feeding pipe 24 by a feeding device 23, and is supplied to the field from the lower end of the feeding pipe. The upper part of these machines is covered with a bonnet 25, and a spare seedling stand 26 is provided on the upper side thereof. In addition, on the lower side of the fuselage, a rear part is pivotally attached by a support shaft 27, and a front part has a variable length link.
A float 29 supported by 28 is provided with height adjustable.

The rice transplanter 1 is configured to hydraulically perform vertical movement control and horizontal control of the machine body, and a valve device 31 for hydraulic pressure switching control is provided above the mission case 2. A main cylinder 34 for raising and lowering the machine body is fixedly provided rearward on the lower rear portion of the valve device. A link plate 35 is horizontally attached to the rear end of the main cylinder.
The left and right ends of the link plate are swing arms 38, which rotate integrally with the wheel transmission cases 6, 6 by connecting rods 36, 36.
It is connected to 38. A sub-cylinder 39 for horizontal control of the machine body is provided at an intermediate portion of the left side connecting rod 36 (L) of the connecting rods 36 (L, R).

The height of the field scene is detected by the detection rod 41 attached to the float 29, the pitching valve in the valve device 31 is switched accordingly, and the main cylinder 34 performs contraction operation. Then, the swing arms 38, 38 are rotated back and forth via the connecting rods 36 (L, R), and the left and right propulsion wheels are
Since 7 and 7 move up and down by the same amount at the same time, as a result, the aircraft moves up and down to keep the planting depth constant.

Further, the pendulum 42 provided on the side of the valve device 31 detects the tilt of the machine body in the left-right direction, and the rolling valve in the valve device 31 is switched accordingly, and the sub-cylinder is operated.
39 contracts. Then the swing arm on the left side
38 is rotated, and only the left propelling wheel 7 (L) moves up and down with respect to the machine body to correct the lateral inclination of the machine body.

The planting device 12 includes a planting rod 52 having a tip with a planting claw 50 formed of a pair of needle-shaped bodies and an extruded body 51 provided in a space between the pair of needle-shaped bodies. As a drive mechanism for the planting rod 52, drive shafts 54, 55 arranged side by side in the planting section transmission case 10 are arranged.
The main crank 56 and the sub crank 57 driven by are provided, the body 52a of the planting rod 52 is pivotally supported on the pin shaft 56a of the main crank, and the pin 57a of the sub crank and the base 52b of the planting rod are provided. The pivot 58 is connected by a swing link 59. The drive shafts 54, 55 are driven in synchronization with each other and are rotated in opposite directions. Further, the arm length R of the main crank 56 is formed longer than the arm length r of the sub crank 57.

When the main crank 56 and the sub crank 57 rotate, the planting rod 52 moves in a predetermined manner, and the planting claw 50 moves in a vertically long eight-character locus P shown by a chain line in FIG. The numbers 1 to 12 added to the circular coordinates and the locus P indicate the rotation angles of both cranks 56 and 57 and the positional relationship of the planting claw 50 at that time. During this movement, due to the action of the mechanism in the trunk portion 52a, the planting claw 50 and the push-out member 51 perform a predetermined opening / closing operation and an in / out operation, and the planting claw 50 is supplied to the outlet 17a at the point A on the locus. Grasp the seedling and release it at point B,
At the point C, the extruded body 51 projects to complete the implantation. As is clear from the figure, this locus P is the interval L ₁ between the upward path P (U) and the downward path P (D) at the seedling receiving height (point A).
Since it is wide, it is convenient for gripping seedlings, and the same interval L ₂ at the transplantation height (point C) is narrow, so that the locus of seedlings is not large in the field and is preferable.

FIG. 5 and FIG. 6 show not a preferred embodiment of the present invention but a reference technique example in which a similar locus of a planting rod can be obtained. In addition to the present invention, a plant having a configuration shown in these drawings can be used. The locus of the stick is a figure of eight. That is, in order to obtain a similar trajectory, as shown in FIGS. 5 and 6, the main crank 56 imparts a rotational motion to the base 52b of the planting rod to link the sub crank 57 and the body 52a. The structure may be connected by 59, and the installation positions of the main crank 56 and the sub crank 57 may be upside down. In any of the drive mechanisms, the locus P of the planting claw 50 can be formed into an eight-character shape that intersects at the intermediate portion by rotating the machine frame side end of the swing link 59.
The distance L ₂ can be reduced, and the distance L ₁ can be increased by appropriately setting the effective radii R, r of the main crank 56 and the sub crank 57, which is ideal for the type of seedlings. It is possible to obtain a realistic trajectory.

EFFECTS OF THE INVENTION As is apparent from the above description, the planting device according to the present invention drives the planting rod with the main crank and the sub crank, and makes the radius of rotation of the main crank smaller than that of the sub crank. By increasing the distance, the distance between the upward path and the downward path is wide in the upper part and narrow in the lower part, so that an ideal trajectory of the planting nail can be obtained, and the seedlings can be effectively gripped by the planting nail. It became possible to reduce the locus of seedlings as well.

[Brief description of drawings]

FIG. 1 is a side view of a walk-behind rice transplanter that is an example of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an explanatory view showing the configuration of a planting device, and FIG. 4 is a side view thereof. FIG. 5 and FIG. 6 are side views of the planting device having different configurations. 1 ... Walk type rice transplanter (transplanter), 12 ... Transplanter, 50 ...
… Planting claws, 52… Planting rods, 56… Main crank, 57… Sub crank, 59… Swing link.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Kazuhide Shiozaki, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Technical Department, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Kihachiro Hase, No. 1, Yakura, Tobe-machi, Iyo-gun, Ehime Prefecture Technical Department Co., Ltd. (72) Inventor, Rie Seike, No. 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

(57) [Claims] 1. A planting device having a planting rod for splitting and holding seedlings in a seedling tank and planting in a field, the planting rod being attached to an intermediate part of the planting rod and rotating around the base part. A main crank for rotating, and one end of which is attached to the base of the planting rod to support the base, and the other end of which is a swing link attached to the sub-crank. Also, the planting device of the transplanter, wherein the rotation radius of the auxiliary crank is reduced.