JPH0218982Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a seedling planting method in which 8 rows of seedlings are planted on the left and right sides of the vehicle with respect to the left and right center of the vehicle, at the rear of the vehicle whose driving rear wheels run across 4 rows over the planned planting area. The purpose of this riding-type rice transplanter is to have a simple structure and excellent soil leveling due to its rational float arrangement, and to also provide a platform for automatic elevation control of the seedling planting device. It also provides a float structure with excellent detection accuracy as a sensor.

The characteristic configuration of the present invention is that in the above-mentioned 8-row riding rice transplanter, the seedling planting device includes a center float for leveling the planting area of the 2 central rows, and 3 rows on the left and right outer sides.
It is equipped with a pair of left and right side floats 9 for leveling the planting area in rows, and the center float is configured as a sensor float for controlling the elevation of the seedling planting device, and its functions and effects are as follows: It is as follows.

In other words, by configuring it with a total of three floats: a center float for the two central rows and a pair of left and right side floats for the three left and right outer rows, for example, as shown in Figure 5A, Compared to the construction with four ground leveling floats 31 for each row, the trail of the rear wheels 1 in the four-way condition can be reliably leveled with the side floats without providing a fin-like auxiliary leveling tool or the like on the floats 31. This enables good seedling planting in each row, and by configuring the sensor float for automatic lifting and lowering control of the seedling planting device with the center float of the three floats. For example, in the case of the four-piece configuration described above, compared to configuring either the left or right float 31a on the center side as a sensor float, it is possible to perform appropriate detection without biasing the detection accuracy in the left-right direction of the seedling planting device. As a result, it has become possible to improve the controllability of raising and lowering the seedling planting device.

By the way, in order to ensure that the trail of the rear wheels is leveled and to arrange the sensor float at the center of the left and right sides of the seedling planting device, as shown in Figure 5 (b), it is necessary to
It is possible to consider a five-float configuration consisting of a sensor float 32 that is used for land preparation and also serves as a sensor float, and two side floats 33 and 34 on the left and right sides, but as the number of floats increases, it is difficult to plant seedlings. The structure connected to the device is complicated, which is disadvantageous in terms of manufacturing and assembly, and the right rear wheel 1 has an auxiliary wheel that spans 6 rows, as is generally done in 8 row rice transplanters. 1a, there is a drawback that the side floats 33 and 34 cannot level the ground left by the auxiliary wheels 1a.

According to the present invention, since the structure consists of three floats, which is the minimum number of odd number floats, the structure of connecting them is simple.Moreover, since the side floats are for grading the ground with three outer rows, it is possible to create a structure that spans six rows. This has the advantage that the ground left by the auxiliary wheels can be reliably leveled with the side floats without the need for auxiliary leveling tools, and as a whole, it is possible to provide a riding rice transplanter with a simple structure and extremely excellent planting performance. I've reached it.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in FIG. 1, a front driving unit 4,
In addition, a boarding operation section 5 is provided, and an inclined seedling platform 6 that reciprocates horizontally with a constant stroke is provided, and eight pine-shaped seedlings W placed side by side on the seedling platform 6 are sequentially placed from the bottom row of each one. Eight seedling planting claws 7 that take out seedlings for each plant and plant them on the mud surface, and a plurality of soil leveling floats 8 and 9 that are arranged side by side in the left and right direction of the machine.
A seedling planting device 10 equipped with various devices such as the above is connected to the body frame 4 via a link mechanism 11 by a hydraulic cylinder 12 so that it can be driven up and down, thereby constructing an eight-row riding rice transplanter. There is.

As shown in FIGS. 1 and 2, the soil leveling floats 8 and 9 are constructed by inserting notches 8a for the planting operation passage of the two seedling planting claws 7 in the left and right centers of the machine body on both the left and right sides of the rear end. A substantially "T"-shaped center float 8 formed on the outer side is disposed at the left and right center of the machine and attached to the seedling planting device 10, and a notch for the three seedling planting claws 7 on the left and right sides to pass through the planting operation. A pair of left and right side floats 9 are formed by arranging the left and right outer parts and the left and right center parts of the rear end portion of the center float 8.
The seedling planting device 10 is arranged in a left and right pattern.
As the aircraft moves, the center float 8 levels the soil for planting on the two central rows, and the side floats 9 move the rear wheels 1, which are arranged across the four central rows, and It is constructed so that the planting mud surface is leveled for each of three outer rows by leveling the footprints of a pair of left and right auxiliary wheels 1a which are appropriately attached to the rear wheels 1 and arranged in a manner spanning six rows.

In order to attach each of the floats 8 and 9 to the seedling planting device 10, a fixed frame portion of the seedling planting device 10 is provided with a
One float support shaft 15 is
The front end of each float 8, 9 is connected to the swinging front end of an arm 16 which is rotatably supported around Q ₁ and arranged in parallel to the support shaft 15.
Brackets 8a and 9a are connected to each other so that their vertical positions can be changed freely through the brackets 8a and 9a, which are attached to the front and rear central parts of each float 8 and 9, and a seedling planting device side which is connected to the swinging rear end of the arm 16. Pivotally connect the rear end portions of the support link mechanisms 14, and
By rotating and fixing the support shaft 15 using the lever 17, the posture of each arm 16 can be integrally changed,
The height of the seedling planting device 10 of each float 8, 9 is changed, and the depth of seedling planting by the seedling planting claws 7 can be changed as appropriate depending on the field.

In addition, at the left and right center of the lower surface of each float 8, 9,
Mud passage grooves 18 extending from the front ends to the rear ends of the floats 8 and 9 are provided respectively with the front end openings of these grooves 18 formed in a flat shape in plan view. By passing the floats backward through the floats 18, mud pushing by the front ends of the floats 8 and 9 is reduced, and running resistance is reduced.

To explain the sensor float 8 in more detail, as shown in FIG. At the same time, the rear end link 14a and the control valve 20 for the hydraulic cylinder 12 for raising and lowering the seedling planting device are interlocked and connected by a release wire 21, thereby controlling the depth of the tiller. In order to maintain the seedling planting device 10 at an appropriate working height above the ground by detecting the swinging of the rear end link 14a around the horizontal axis _Q2 due to the vertical movement of the center float 8 due to changes in ground pressure caused by fluctuations. The control valve 20 is configured to be automatically operated.

In addition, by configuring the center float 8 placed at the center of the left and right sides of the machine to also serve as a sensor float for automatically raising and lowering the seedling planting device as described above, the seedling planting device 10 can be detected from the ground without uneven detection accuracy in the left and right directions. It is configured to improve the automatic lifting control performance of the seedling planting device 10.

The release wire 21 includes a fourth
As shown in the figure, a connection part 21a is provided in the middle part for releasing the connection state of the release wire 21 when the seedling planting device 10 is removed from the body frame 3 during transportation or storage of the rice transplanter. To configure the connecting portion 21a, the inner wire 21b is connected to both ends of the connecting portion of the inner wire 21b.
engage and lock each other only in the extending direction, and
The locking connectors 22 and 23, each having a cylindrical overall shape in the engaged state, are attached, and a cylindrical cylinder is fitted onto the locking connectors 22 and 23 in the engaged and locked state to prevent them from being disengaged. Condition restraining member 24
is attached to one of the connecting tools 23 in such a manner that it can swing freely between the checking state and the checking release state, and is biased toward the checking state by the attached spring 25, and the connecting tool 23 A stopper 23a for holding the restraining member 24 in the restraining state against the urging force of the spring 25 in the restraining state is integrally formed therein.
The structure is such that the wires 21 can be easily connected and disconnected by simply operating the wires 4.

The specific shapes of the center float 8 for the two central rows and the pair of left and right side floats 9 for each of the three outer rows, as well as the structure in which they are connected to the seedling planting device 10, can be modified in various ways.

Furthermore, in order to configure the center float 8 to also serve as a sensor float for automatic elevation control of the seedling planting device 10, the vertical swing of the center float 8 is detected instead of detecting the vertical movement of the center float 8. The detection form can be changed in various configurations, and the interlocking structure between the lifting mechanism of the seedling planting device 10 and the center float 8 can also be changed in various configurations.

The present invention is intended for various types of 8-row riding rice transplanters.

[Brief explanation of the drawing]

Fig. 1 is an overall side view, Fig. 2 is a plan view showing the float arrangement structure, Fig. 3 is a schematic side view showing the raising/lowering control structure of the seedling planting device, and Fig. 4 is a part showing the release wire connection structure. Cross-sectional view, Figure 5 A and B are as follows:
FIG. 2 is a diagram corresponding to FIG. 2, each showing a comparative example. 1... Rear wheel, 3... Vehicle body, 8... Center float, 9... Side float, 10... Seedling planting device.

Claims (1)

[Scope of utility model registration request] A seedling planting device 10 for planting eight rows on the left and right with respect to the center of the left and right sides of the vehicle is connected to the rear of a traveling vehicle body 3 whose driving rear wheels 1 run across four rows over the planned planting area so as to be able to rise and lower. It is a riding type rice transplanter for planting 8 rows, and the seedling planting device 10 includes a center float 8 for leveling the planting area of 2 central rows, and a pair of left and right floats for leveling the planting area of 3 rows on the left and right outer sides. A riding-type rice transplanter for planting eight rows, characterized in that it is equipped with side floats 9, and the center float 8 is configured as a sensor float for controlling the raising and lowering of a seedling planting device 10.