JPH0458814A - Moving system for seedling loading table in transplanter - Google Patents

Abstract

PURPOSE:To provide the title compact system so designed that a transmission case with a lead cam housed therein and an engine are arranged in the front and a revolving shaft is arranged between the front and a seedling loading table in the rear, thereby facilitating the entire arrangement involving the revolving shaft and the other members. CONSTITUTION:The reciprocating motion of the slider 19 of a lead cam 17 in a transmission case 7 in the front of a machine body frame 3 is transmitted, through the revolution of a revolving shaft 20, to a seedling loading table 10 in the rear. The slider 19 is connected via a rocking arm 21 to the revolving shaft, and said table is connected, via another rocking arm 22, to the revolving shaft.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a transplanting machine, such as a walk-behind rice transplanter, which supports a seedling stand movably in the width direction of the machine body. This invention relates to a seedling stand moving device that reciprocates from side to side.

(b) Conventional technology In general, a walk-behind rice transplanter has a body supported by wheels, with an engine and a mission case disposed at the front of the machine, and a seedling stand and controls at the rear of the machine. A handle is provided, and the seedling table on which the mat seedlings are placed is moved horizontally from side to side while planting using a planting claw.

Conventionally, the device for moving the seedling stand of a walk-behind rice transplanter is one that uses the rotation of a lead cam to move the seedling stand laterally through the reciprocating motion of a slider that slides in the axial direction of the lead cam. It is installed on the back of the stand or inside the planting transmission case placed in front of the seedling stand. For this reason, a large amount of space is required in the front and rear directions of the machine, which tends to increase the overall length of the walking rice transplanter, which causes inconvenience especially during turning movements, and also causes the weight of the machine to shift backwards, causing the machine to lose weight. The front and rear balance also deteriorated, which was inconvenient.

(c) To solve this problem, for example, as shown in Japanese Patent Application Laid-open No. 59-227213, the lead cam is placed in the mission case at the front of the aircraft, and the slider of the lead cam and the seedling stand are There is a method in which the rod connecting the two rotates when viewed from above to move the seedling table back and forth, but since the rod rotates when viewed from above, there is a problem that the planar space becomes large. .

Therefore, the present invention arranges a rotation axis in the front and back direction of the aircraft,
It is an object of the present invention to provide a device for moving a seedling stand for a transplanter that solves the above-mentioned problems by operating a lead cam using the rotating shaft to reciprocate the seedling stand.

(d) Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances, and as shown in FIGS. 1 to 3, for example, an engine (6 ) and a mission case (7) are arranged, and a seedling stand (10) is arranged at the rear of the machine body (3). Lead cam (17) and
From the vicinity of the mission case (7) to the seedling stand (1)
0) A rotating shaft (20) disposed along the longitudinal direction of the fuselage (3) in the vicinity, and a slider (19) of the lead cam (17) fixed to the front part of the rotating shaft (20). a first swing arm (21) connected to the rotating shaft (20), and a second swing arm (21) connected to the seedling stand (10) and fixed to the rear of the rotation shaft (20).
A swing arm (22).

(E) Function Based on the above configuration, the transplanting machine can perform, for example, during planting work.
Perform the following actions. First, when the slider (19) performs a reciprocating motion due to the rotation of the sliding cam (17) in the mission case (7), the first swinging arm (21) also swings.
A rotating shaft (20) fixed to the arm (21) rotates. Then, the second
The swinging arm (22) swings, the seedling stand (10) connected to the arm (22) performs reciprocating motion, and the planting claw sequentially plants the mat seedlings on the seedling stand (10). wear.

(f) As described in detail, according to the present invention, the lead cam (17
) is placed inside the mission case (7),
The seedling table moving device can be disposed in a compact manner in front of the machine body (3), and the front-rear balance is also improved, allowing the overall length of the machine body to be shortened and the machine body to be integrated into one unit.

In addition, the reciprocating movement of the slider (19) of the lead cam (17) disposed inside the mission case (7) is controlled by the seedling stand (
10), it is done by rotating the rotating shaft (20) arranged along the longitudinal direction of the fuselage (3), and since the rotating shaft (2o) itself does not move, it is There is no interference with other members, and arrangement with other members is facilitated.

(g) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, the walk-behind rice transplanter 1 has a body frame 3 supported by wheels 2, and a float 5 is disposed at the bottom of the turret frame 3 along the front and back direction. It is set up. An engine 6 and a mission case 7 are arranged at the front part of the fuselage frame 3, and
A bonnet 9 is provided above the engine 7 to cover it. Further, at the rear of the machine frame 3, a seedling stand 10 on which mat seedlings are placed is supported so as to be movable in the width direction of the machine body, and in front of the seedling stand 10,
A planting nail 11 is provided. The planting claw 11 is used to take out one seedling at a time from the mat seedling and plant it. An operating handle 12 supported by an operator is disposed behind the seedling stand 10.

Further, as shown in FIGS. 1 and 5, an engine 6 is fixed to the upper part of the mission case 7 with bolts, etc., and axle cases 2 are mounted on both left and right sides of the case 7.
A chain case 13.13 is swingably supported by 7.27, and a wheel 2.2 to which power is transmitted via a sprocket and a chain (not shown) is pivotally supported on the chain case 13.13. .

Further, a gear cover 15 is provided on one side of the engine 6 and the transmission case 7. The gear cover 15 covers the engine 6 and the transmission case 7.
This gear covers gears A, B, and C that connect the transmission of
is the mission case input shaft 26 inside the mission case 7
A gear B that meshes with the gears A and C is disposed between the gears A and C, and the power from the engine 6 is transmitted to the gear A.

The signal is transmitted to a transmission section (not shown) in the transmission case via B and C. Further, the pump 16 is attached to the outside of the gear cover 15 and supports the gear B.

In addition, in order to move the seedling stand 10 in the width direction of the machine body, as shown in FIGS. is rotatably arranged, and the lead cam 17
A navigation screw is cut on the surface of the screw, and a slider 19 is attached to the screw.
are slidably engaged and supported. The slider 19 is
As the lead cam 17 is driven and rotated, the slider 19 is configured to reciprocate within a constant stroke.

On the other hand, a rotating shaft 20 is located at the center of the fuselage frame 3 in the width direction.
is arranged across the front part of the seedling stand 10 so as to protrude from the rear part of the mission case 7, and the rotating shaft 20
is rotatably supported at its front part by the mission case 7 and by its rear part via a bracket fixed to the fuselage frame 3.

Further, a first swinging arm 21 is connected to the locking pin 19 of the slider, and the swinging arm 21 is fixed to the transmission case 7 side of the rotating shaft 20. A second swinging arm 22 is fixed to the side of the rotation shaft 20 on the side of the seedling stand 10.
2 is a support longer than the support β1 of the first swing arm 21! 2, and is attached so as to be in a straight line with the first swing arm 21 when viewed from the front (see Fig. 10).

Further, on the lower front side of the seedling stand 10, a seedling holder 23 is provided.
The seedling holder 23 is attached across its entire width in the width direction, and a locking pin is provided protruding from the center of the seedling holder 23 in the width direction, and the second swing arm 22 is connected to the locking pin. In addition,
The parts where these swinging arms 21 and 22 are connected to the locking pins are such that the first swinging arm 21 corresponds to the stroke of the slider 19, and the second swinging arm 22 corresponds to the stroke of the seedling stand 10. Elongated holes corresponding to each are formed.

Since the present embodiment has the above-described configuration, the walking rice transplanter 1 has the power from the engine 6 transmitted to the transmission part of the transmission case 7 via the gears A, B, and C, sprocket and chain to wheel 2
The information is transmitted to the vehicle and the vehicle travels within the field. In order to carry out the planting work, the planting claw 11 should be placed one position higher than the mat seedling on the seedling stand 10.
Seedlings are taken out one by one and planted, and the seedling stand 10 is moved to the left or right each time.

When the slider 19 of the seedling stand 10 is first reciprocated from side to side by the rotation of the lead cam 17, the slider 19
The first swing arm 21 connected to 9 is swung, and the rotation shaft 20 is also rotated by the swiveling. Then, the rotating shaft 2
The second swing arm 22 swings about 0 as a pivot, and reciprocates the seedling stand 10 left and right. In addition, as shown in FIG. 2, a support for the second swing arm 22! 22 is longer than the support ρ1 of the first swing arm 21, the stroke βb of the seedling stand 10 is longer than the stroke βa of the slider 19.

In this way, the support ρ1 of the first swinging arm 21 is set so that the lead cam 17 is disposed at the lower part of the mission case 7 and almost matches the height of the mission case 7, and the swinging arm 21 is placed inside the mission case 7, the seedling table moving device can be arranged compactly on the machine frame 3, and the front and rear balance can be easily maintained, so that the weight for adjusting the balance of the walking rice transplanter 1 can be There is no need to provide the same, and the weight can be reduced.

Further, the lead cam 17 is located in the lubricating oil inside the transmission case 7, so that the lead cam portion can be reliably lubricated, and durability can be improved.

Further, when transmitting the reciprocating motion of the slider 19 that slides the lead cam 17 to the seedling stand 10, a rotating shaft 20 is disposed in the center of the body frame 3, and the rotation of the rotating shaft 20 is used to transmit the reciprocating motion of the slider 19 that slides on the lead cam 17 to the seedling stand 10. In addition, since the rotating shaft 20 itself does not move, there is no interference with other members such as piping and wiring arranged on the body frame 3, so space can be used effectively.

[Brief explanation of drawings]

The figures show the main parts of the seedling bed moving device of the walk-behind rice transplanter. Figure 1 is a side view, Figure 2 is a front view of the seedling stage, and Figure 3 is a perspective view. be. FIG. 4 is a side view showing the entire walking type machine, and FIG. 5 is a front sectional view thereof. 3... Airframe frame (aircraft body) 6... Engine,
7...Mission case 10...Seedling stand,
17... Lead cam 19... Slider 20...
-Rotating shaft 21...first swing arm 22...second swing arm

Claims (1)

[Scope of Claims] 1. A transplanter in which an engine and a mission case are arranged in the front part of the machine body, and a seedling stand is arranged in the rear part of the machine body, wherein the transplanter is arranged along the width direction of the machine body in the mission case. a lead cam; a rotating shaft disposed along the longitudinal direction of the aircraft from near the mission case to near the seedling stand; and a first rotating shaft fixed to the front of the rotating shaft and connected to the slider of the lead cam. A device for moving a seedling stand for a transplanter, comprising: a swinging arm; and a second swinging arm fixed to the rear part of the rotating shaft and connected to the seedling stand.