JP2647778B2 - Rice transplanter seedling remaining detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects the remaining amount of seedlings placed on a seedling cradle below a set amount and warns an operator of the need to replenish the seedlings. It concerns the device.

[0002]

2. Description of the Related Art As a seedling remaining amount detecting device, a detecting piece which is urged and protruded from a seedling placing portion is provided so as to be able to move back and forth, and the detecting piece is pushed in at the bottom soil floor of the placed seedling and retracted. The structure for detecting the consumption of seedlings by detecting the presence of the seedlings and detecting the consumption of the seedlings by urging the detection pieces along with the passage of the seedlings is generally used. Since the detection piece is operated with the weight of the sensor, the detection is reliable, and it has been used most often since the old days.However, the opening from which the detection piece comes and goes is clogged with soil and root debris that has spilled from the floor soil part of the seedling. There is a risk that the operation of the detection piece may be hindered, or that soil or root debris that has entered the opening may adhere to the detection switch that is interlocked with the detection piece, resulting in detection failure. As means for solving such a problem, for example, as shown in Japanese Utility Model Laid-Open No. 53-117420 and Japanese Utility Model Laid-Open No. 56-104316, the upper surface of By equipping the side of the partitioning wall with a detection piece that can contact and work on the side of the bed soil of the placed seedlings, it is possible to prevent soil and root debris from entering through the horizontal detection piece exit opening. An apparatus for detecting the remaining amount of seedlings configured as described above has been proposed for a long time.

[0003]

However, in the above proposed structure, the detecting piece protrudes downward and in a cantilever manner into the seedling mounting portion, so that the remaining seedlings are dragged up to above the seedling rest. At this time, the floor soil of the seedling may be caught on the free end of the cantilevered detection piece, and there is a possibility that the detection piece may be damaged by forcibly dragging the seedling without noticing this . Obviously, such a problem does not occur if this detection piece is configured to have a large projecting shape like the one currently used, but in this side detection mode, the upper surface of the Since the detection piece must be completely immersed in the partition wall divided into the section where the seedlings are placed, the detection piece having the currently used dimensions cannot be used in practice. Also,
In the case of a detection piece having a size that can be incorporated into a partition having a small width, an operation stroke of the detection piece is so small that accurate detection cannot be performed. In other words, the above proposed structure has excellent characteristics in principle, but cannot be put into practical use with existing machines as it is. The present invention
The present invention has been made in view of such a point, and it is an object of the present invention to introduce it to a current machine and make it practical while utilizing the goodness of the side detection form.

[0004]

In order to achieve the above-mentioned object, a remaining seedling detecting device according to the present invention is provided on a side wall of a partition wall which divides an upper surface of a seedling mounting table into a plurality of seedling mounting portions. In a rice seedling remaining amount detection device for a rice transplanter equipped with a detection piece that is in contact with a side surface of a floor portion of a seedling so as to be able to move back and forth, the detection piece is swung around a viewpoint in a partition wall to set a seedling mounting portion. And a guide piece connected to the tip of the detection piece body so as to be able to bend and extend freely, and the free end of the guide piece is brought into contact with and supported by a slide surface fixed inside the partition wall. At the same time, the basic structure is a structure in which the detection piece is projected and urged toward the seedling mounting portion in a shape posture bent in a mountain shape. And, specifically, as described in claim 2, the detection piece main body and the guide piece are integrally formed of a resin material. Alternatively, as described in claim 3, the guide piece is pivotally connected to a tip of the detection piece main body.

[0005]

When the detecting piece main body and the guide piece are integrally formed of a resin material, the detecting piece in a free state is bent and urged in a mountain shape as shown in FIG. From the opening formed in the seedling mounting portion. When the seedlings are loaded on the seedling receiving portion, as shown in FIG. 2, the free end of the guide piece moves downward along the slide surface in the partition wall due to the lateral pressure of the placed seedlings, and the entire sensing piece is moved. It is pushed out and totally retreats into the interior of the partition wall. When the mounted seedlings are consumed and the rear end passes through the opening, the detecting piece from which the lateral pressure of the mounted seedlings has been released returns to its original chevron shape with its own elastic restoring force, and this is detected by the switch. You. Further, when the guide piece is implemented by a structure pivotally connected to the tip of the detection piece main body, the bending and extension of the detection piece is caused by the rotation of the fulcrum between the detection piece main body and the guide piece, and the guide piece is placed on the seedling mounting portion. The projecting bias is due to the elastic force of the separately equipped spring.

[0006]

According to the present invention, while the detection piece is made to protrude from the lateral side of the seedling mounting portion in a large mountain shape, the detection piece is entirely retracted into the narrow partition wall, and the detection piece is formed with a large stroke. Can be reliably detected by leaving
Moreover, even if the remaining seedlings are dragged upwards, there is no danger of the seedlings being hooked on the guide pieces whose free ends are always located in the partition walls, and the seedlings of the current dimensions having a narrow partition wall are provided. The seedling remaining amount detection device in this side detection mode can be incorporated into the mounting table and implemented without any trouble.

[0007]

FIG. 5 shows a riding type rice transplanter to which the present invention is applied. This rice transplanter has a structure in which a seedling planting device 3 is connected to a rear portion of a riding traveling vehicle body 1 via a lifting link mechanism 2, and is continuously loaded and mounted on a seedling rest 4 provided in the seedling planting device 3. The seedling A is cut out with a rotary planting claw 5 and planted on a paddy field leveled with a float 6. As shown in FIG. 4, the seedling rest 4 has a plurality of (5 in the figure) upper surfaces formed by partition walls 7.
The seedlings A loaded in each seedling receiving part 8 are divided by a seedling vertical feed belt 9 every time the seedling placing table 4 reaches the end of the horizontal feed stroke. Outlet 10
It is configured to send out to. A seedling remaining amount detecting device S for detecting that the seedlings A have been consumed up to a predetermined amount and notifying the operator at a lower portion of the partition wall 7 that forms one side surface of each seedling placing portion 8. Is equipped.

FIG. 1 shows the details of the seedling remaining amount detecting device S. The seedling remaining amount detection device S includes a detection piece 12 that moves out of an opening 11 formed in the partition wall 7 and a switch 13 that is operated based on the movement of the detection piece 12. The detection piece 1
Reference numeral 2 denotes a detection piece main body 12a rotatable around a support shaft 15 provided in the partition wall 7, and a guide piece 1 connected to the tip thereof.
2b is formed integrally with a resin material, and the detection piece main body 12a and the guide piece 12b are configured to be elastically bendable and stretchable via a thin hinge portion 12c, and to have a chevron attitude in a free state. The free end of the guide piece 12b is received and supported by a slide surface 14 formed on the inner surface of the partition wall 7, and the detection piece 12 is projected from the opening 11 while maintaining the chevron attitude. The switch 13 is provided with an operation piece 1 fixed below the support shaft 15 to which the detection piece 12 is fixed.
The contact operation is carried out by 6.

Therefore, when the seedlings A are loaded into the seedling placing portion 8, the free ends of the guide pieces 12 b are brought into contact with the slide surface 14 in the partition wall 7 by the lateral pressure of the placing seedlings A, as shown in FIG. The entire detection piece 12 is pushed and stretched while moving downward along the entire surface, and entirely retreats into the partition wall 7. When the seedling A is consumed and its rear end passes through the opening, the detecting piece 12 from which the lateral pressure of the seedling A has been released returns to the original chevron shape by its own elastic restoring force, and this is the switch. 13
It is detected by.

[Other Embodiments] Some other embodiments of the present invention will be described below. (1) As shown in FIGS. 6A and 6B, the detection piece main body 12a and the guide piece 12b of the detection piece 12 are formed separately and pivotally connected so as to be able to bend and extend. 17
The detection piece 12 is elastically urged in a chevron shape by the spring 18 provided in the above. (2) As shown in FIG. 7, a pair of detection pieces 12 that move out of the left and right seedling mounting portions 8 are incorporated into one partition wall 7, and the left and right side surfaces of a partition wall 19 installed in the middle of the partition wall 7. In addition to the slide surface 14 for each guide piece 12b, the switch 13 is shared.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a seedling passage detection state of a seedling remaining amount detection device according to the present invention.

FIG. 2 is a partially cutaway plan view showing a seedling presence detection state.

FIG. 3 is a vertical sectional front view of the seedling remaining amount detection device.

FIG. 4 is a plan view of a seedling mounting table.

FIG. 5 is an overall side view of a riding rice transplanter.

FIG. 6 shows another embodiment of the seedling remaining amount detection device according to the present invention, wherein (a) is a partially cutaway plan view showing a seedling passing overdetection state, and (b) is a partly cutaway showing a seedling presence detection state. It is a cutaway plan view.

FIG. 7 is a plan view showing still another embodiment of the seedling remaining amount detection device according to the present invention.

[Explanation of symbols]

 4 Nursery stand 7 Partition wall 8 Seedling placement part 12 Detecting piece 12a Detecting piece main body 12b Guide piece 14 Slide surface 15 Support shaft

Claims (3)

(57) [Claims] An upper surface of a seedling placing stand (4) is brought into contact with a side surface of a partition wall (7) dividing a plurality of seedling mounting portions (8) into contact with a floor soil side surface of the mounted seedling (A). A seedling remaining amount detection device for a rice transplanter, which is provided with a detection piece (12) to be moved out and back, wherein the detection piece (12) is supported by a support shaft (15) in a partition wall (7).
A detection piece main body (12a) that swings around and moves back and forth to the seedling mounting part (8), and a guide piece (12b) that is connected to the tip of the detection piece body so as to be able to bend and extend freely. 12
The free end of b) abuts and supports a slide surface (14) fixed inside the partition wall (7), and the detection piece (1).
2) A device for detecting the remaining amount of seedlings of a rice transplanter, wherein the device is protrudingly biased toward the seedling mounting portion (8) in a shape posture bent in a mountain shape. 2. The seedling remaining amount detection device for a rice transplanter according to claim 1, wherein said detection piece main body (12a) and said guide piece (12b) are integrally formed of a resin material. 3. The seedling remaining amount detecting device for a rice transplanter according to claim 1, wherein said guide piece (12b) is pivotally connected to a tip of said detection piece main body (12a).