JPS5854763B2 - You can't get enough of it. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a riding type rice transplanter in which a seedling planting device is connected to a riding machine body so as to be able to rise and fall freely, and the machine body is placed on a hard road surface where the wheels do not sink. The purpose is to prevent the seedling planting device (the planting claws equipped with this device from colliding with the road surface and being damaged) even when the seedling planting device is lowered.

Embodiments of the present invention will be described below with reference to illustrative drawings.

The figure shows a riding type rice transplanter in which a leveling device 2 for erasing wheel marks and a seedling planting device 3 are arranged in this order toward the rear of an agricultural tractor 1 as a traveling body.

While traveling, this rice transplanter uses the seedling planting device 3 to plant 8 rows of seedlings on the field after leveling and erasing the tracks of one wheel of the tractor 1 using the rotating spiral body 14 of the leveling device 2. It is configured to be planted, and the power take-off shaft at the rear of the tractor 1 and the spiral body 14 of the leveling device 2
The power from the tractor 1 is received by the leveling device 2 through the front and rear transmission shaft 15, which is interposed between the front and rear transmission shafts 15 and the transmission case 16, which pivotally supports the The spiral body 14 is rotationally driven, and the transmission case is driven by a rotating shaft 17 interposed between the transmission case 16 and the seedling planting device 3 with both ends interlocked and connected via universal joints. The power received by the seedling planting device 16 is received by the seedling planting device 3, and the seedling planting device 3 is driven as described below.

The seedling planting device 3 reciprocates the seedling platform 19 in the lateral direction using the power received via the rotating shaft 17 while sliding the lower float 18 along the field surface. At the same time, 8 placed oppositely at the lower end of the seedling stand 19
One planting nail 20... constant vertical circulation trajectory A...
By driving the seedling stand 1 along...
The structure is such that 9 mat-like seedlings are planted in 8 rows.

In addition, numeral 25 in the figure is an extended seedling holder that is arranged in series with the upper part of the seedling holder 19.

Further, a three-point link device consisting of a top link 5 and a pair of left and right lower links 6.6 is interposed between the rear part of the tractor 1 and the upper frame 4 of the leveling device 2. The tractor 1 and the leveling device 2 are connected by a point link device, and a pair of left and right vertical lifting arms 7.7 at the rear of the tractor 1 and the lower link 6.
6 are connected by lift rods 8, 8, respectively, and as the elevating arm 7.7 goes up and down, the leveling device 2 and the planting device 3 connected to this leveling device 2 as described later are It is constructed so that it can be raised and lowered freely.

Between the frame 4 of the leveling device 2 and the connection frame 9 of the seedling planting device 3, a pair of lower left and right side links 10,
10 and the upper link 11 in the upper middle part are connected to the frame 4 side mounting end via a ball joint so as to be rotatable in three-dimensional directions, and the connection frame 9 side mounting end to the horizontal axis. The seedling planting device 3 is rotatably connected to the side links io, io and the upper link 11 so that the seedling planting device 3 can move vertically and roll freely relative to the leveling device 2. It is configured.

Furthermore, a pair of left and right springs 12 12 are interposed between the frame 4 and the side links 10 10 , and an elastic suspension mechanism 13 that elastically holds the seedling planting device 3 against the leveling device 2 is configured.

Further, the intermediate upper link 11 in the suspension mechanism 13 is configured to be able to expand and contract in its longitudinal direction and to be fixed at a desired position. The structure is such that the relative connection postures of the three can be changed and adjusted.

Further, a screw lifting mechanism 23 is interposed between the frame 4 and the springs 12, 12, which moves the mounting arm 22 connected to the springs 12, 12 up and down by rotating the rotating bundle 21. The elastic holding force of the elastic suspension mechanism 13 is adjusted by adjusting the vertical movement.

Further, both upper ends of the frame 4 and the side link io,
A pair of left and right chains 24, 24 are stretched between the attachment end of the io to the connection frame 9, and when the leveling device 2 is in contact with the running road surface, the top of the planting device 3 Planting claw 20 located at the lower end, that is, at the bottom dead center of the circulation trajectory...
In order to position the tip above the running road surface, a descending regulating mechanism 26 is provided that regulates the lowest position of the vertical movement of the seedling planting device 3 relative to the leveling device 2 via the elastic suspension mechanism 13. There is.

(See Fig. 3) Also, a pair of chains 27, 27 are strung across in a crosswise manner between both lower ends of the frame 4 and the attachment ends of the side links 10.10 to the connection frame 9. It is configured to prevent large lateral movement of the seedling planting device 3 relative to the leveling device 2 by the elastic suspension mechanism 13.

According to the above configuration, during normal rice planting work,
The seedling planting device 3 is connected to the tractor 1 via a three-point linkage device.
The leveling device 2 is rigidly connected to the leveling device 2 via an elastic suspension mechanism 13, and is elastically held in a vertically movable and rolling manner. While following the tractor 1, the tractor 1 does not tilt to the left or right even if the tractor 1 tilts in the left-right direction, and the desired planting can be carried out at a constant depth.

Further, when traveling on the road, the leveling device 2 and the planting device 3 are lifted upward with respect to the tractor 1.

Even if the operator accidentally lowers the lifting arm T, the leveling device 2 contacts the hard road surface first and prevents the lowering, as shown in Fig. 1, so that seedlings cannot be planted. The device 3 is suspended and supported by the lowering regulation mechanism 26 without coming into contact with the road surface.

In this case, the leveling device 2 is inherently strong and is not easily damaged, and even if it is slightly deformed, its operational performance will not be affected.

Incidentally, as the descent regulating mechanism 26, for example, the spring 1
Mounting arm 2
2 and the side links 10, 10;
Furthermore, various methods are conceivable, such as means for connecting a contact tool attached to the frame 4 of the side link 10° 10 to restrict the movement angle from the frame 4.

In addition, the elastic suspension mechanism 13 in Example I allows the seedling planting device 3 to roll freely with respect to the leveling device 2, but connects the seedling planting device 3 with respect to the leveling device 2 so that it can freely move upward. It goes without saying that the present invention can also be used in those that do.

Further, instead of the screw-advancing elevating mechanism in the elastic suspension mechanism 13, a hydraulic elevating mechanism using a hydraulic cylinder or the like may be used.

As explained above, the riding type rice transplanter according to the present invention has the leveling device 2 and the seedling planting device 3 integrally provided in the riding vehicle body 1 so as to be able to move up and down freely, and the traveling body 1 can be moved up and down without the body sinking. When the seedling planting device 3 is lowered to the lower limit while positioned on a flat road surface, the lowest end of the tip circulation trajectory A of the planting claw 20 equipped on the seedling planting device 3 is located above the road surface. The present invention is characterized in that the leveling device 2 is grounded to restrict the lowering limit of the seedling planting device 3.

In other words, since a mechanism is provided to limit the lowering limit of the seedling planting device, even if the seedling planting device 3 is lowered by mistake, there is no risk of the planting claws 20 hitting the road surface and being damaged. Failures that are fatal to the rice transplanter, such as breakage of the planting claws 20 and damage to the planting claw drive mechanism, can be easily avoided by rationally setting the downward regulation.

Since the lowering limit regulating mechanism for regulating the lowering limit of the seedling planting device is constructed from the leveling device, the lowering limit of the seedling planting device can be restricted without providing a special lowering limit regulating mechanism. I was able to do something.

[Brief explanation of drawings]

The drawings illustrate embodiments of the riding-type rice transplanter according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a schematic plan view of the rear part, and Fig. 3 is a connection between a leveling device and a seedling planting device. FIG. 1... Traveling machine, 3... Seedling planting device,
20... Planted nail, A... Tip circulation trajectory.

Claims (1)

[Claims] 1. A leveling device 2 and a seedling planting device 3 are integrally provided on a passenger traveling body 1 so as to be able to move up and down, and the seedlings are planted while the traveling body 1 is positioned on a flat road surface where the body does not sink. The leveling device 2 is moved so that when the device 3 is lowered to the lower limit, the lowest end of the tip circulation trajectory A of the planting claw 20 installed in the seedling planting device 3 is located above the flat road surface. A riding-type rice transplanter characterized in that it is configured to ground the seedling planting device 3 to restrict the lowering limit of the seedling planting device 3.