JPS6345152Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a seedling holding device for a transplanter for transplanting sweet potato seedlings.

Conventionally, in a transplanter equipped with a scissor-like seedling holder that can be opened and closed to hold seedlings and can be moved up and down, the seedling holder, which is open in an elevated position, closes on the way down and clamps the seedlings. The seedling holder holding the seedlings is stuck into the soil surface in a closed state, and the seedlings are transplanted to the ground surface by opening the seedling holder at the timing of the rise. Therefore, the opening dimension of the seedling holder before it is in the elevated position and holding the seedling is set wide in order to securely hold the seedling, and when the seedling holder is stuck into the ground and transplanting the seedling. The size of the opening is set as wide as before holding the seedlings. For this reason, there are disadvantages in that the seedling holder can seriously tear the mulch film covering the ridges, or create large holes around the seedlings, impairing their ability to take root.

This idea was developed in consideration of these points, and by regulating the opening size of the seedling holder during transplanting, it is possible to avoid tearing the mulch film or making large holes around the transplanted seedlings. It is an object of the present invention to provide a seedling holding device for a transplanter that can prevent such problems.

This idea includes a seedling holder that descends in a closed state while holding the seedling, pierces the ground surface, and then opens to transplant the seedling when it rises, and controls the opening dimension when the seedling holder rises. The structure is such that the seedling holding body can be prevented from tearing the mulch film or making large holes around the transplanted seedlings by being restricted by the body.

An embodiment of this invention will be described based on the drawings. A work tower 3 is erected on a machine body 2 of a transplanting machine connected to a machine body 1 of a mobile agricultural machine and travels, and a slide plate 4 is provided on the work tower 3 so as to be slidable in the vertical direction. The slide plate 4 is provided with a seedling holder 7 consisting of a pair of claws 6 that are rotatable about a fulcrum 5 and a projection piece 6a fixed to each claw 6, and a seedling holder 7 is provided between the claws 6. A spring 8 is tensioned to bias 7 in the closing direction. Further, the slide plate 4 is provided with bosses 9 located on both sides of the claw 6 and rotatable around an axis, and pins 10 fixed to the outer periphery of these bosses 9 and extending in the front-rear direction. It is being A spring 11 having a larger spring constant than the spring 8 is stretched between the pins 10. Therefore, the claw 6 in the free state is elastically biased in the opening direction. A pair of guides 12 are fixed on the left and right at the lower part of the work tower 3, which are regulating bodies for regulating the wide dimensions of the seedling holder 7 that sticks into the ground surface. The length of these guides 12 is determined to be at least the length from the position where the claw 6 pierces the ground surface until the tip of the claw 6 leaves the ground surface. At the top of the work tower 3, a pair of left and right plates 13 protrude horizontally inward, interfering with the pin 10 and rotating the pin 10 and boss 9 together when the slide plate 4 descends. In addition, a chain drive tower 14 is erected in front of the work tower 3, and this chain drive tower 14 rotates in response to the driving force from the machine body 1, and has a drive protrusion 15 and a release recess. A chain 17 is provided to which a chain 16 is fixed. It should be noted that the plate 13 is provided so that it cannot rotate downward from the horizontal state and is rotatable upward from the horizontal state. Furthermore, a seedling mounting stand 18 is provided at the rear of the working tower 3 and rotates on which seedlings are placed such that they can be held by the seedling holders 7.

In such a configuration, when the machine body 2 is connected to the machine body 1 and is run, the chain 17 is rotated by the driving force from the machine body 1, and the drive protrusion 15 hits the protrusion 19 fixed to the slide plate 4. , slide the slide plate 4 downward. When the slide plate 4 is positioned upward, the pin 10 is joined to the protruding piece 6a of the seedling holder 7 by the tensile force of the spring 11, as shown in FIG. Since the spring constant is larger than the spring constant of , the seedling holder 7 is maintained in an open state. Then, when the slide plate 4 slides downward, the pin 10
3, the pin 10 and boss 9 rotate integrally in the direction shown by arrow A in FIG. This rotation causes the pin 10 to rotate to the position shown in FIG. 5, and since the tensile force of the spring 11 no longer acts on the seedling holder 7, the seedling holder 7 is closed by the tensile force of the spring 8. In addition, the seedling holder 7
During the closing operation, the seedling holder 7 is placed on the seedling stand 18
It is used to hold the seedlings placed on the holder. The seedling holder 7 holding the seedlings slides further downward together with the slide plate 4, and eventually the seedling holder 7 pierces the ridge. At the same time as the driving convex part 15 separates from the convex part 19, the release concave part 16, which has moved downward due to the rotation of the chain 17, interferes with the pin 10, causing the pin 10 and the boss 9 to be integrally moved in the direction shown by arrow B in FIG. Rotate it. This rotation causes pin 1
0 is again connected to the protruding piece 6a of the seedling holder 7, the seedling holder 7 is opened by the tensile force of the spring 11 and releases the seedlings, and the slide plate 4 is connected to the spring ( (not shown) by unwinding the wire 20.

Therefore, when the pin 10 rotates in the direction of arrow B shown in FIG. However, as shown in FIGS. 2 and 3, the claws 6 of the seedling holder 7
2, the opening size is regulated. Therefore, when the seedling holder 7 releases the seedlings, the mulch film covering the ridges may be torn, or the soil around the transplanted seedlings may be scattered, creating large holes around the seedlings. This improves the survival of seedlings and suppresses the growth of weeds.

This invention uses a regulating body to regulate the opening dimension of the seedling holder, which moves downward while holding the seedling in its closed state as described above, and opens while it is stuck in the ridge to transplant the seedling. This prevents the seedling holder from tearing the mulch film covering the ridges, and also prevents the formation of large holes around the transplanted seedlings, thereby improving the survival of the seedlings. It is something that you have.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is an overall side view, Fig. 2 is an enlarged front view of the working tower showing the main parts, and Fig. 3 is a side view showing a part of it. FIG. 4 is a front view showing the seedling holder in an open state, and FIG. 5 is a front view showing the seedling holder in a closed state. 2... body, 7... seedling holding body, 12... guide (regulating body).

Claims (1)

[Scope of utility model registration request] In a seedling clamping device for a transplanter, which has a seedling clamping body that is movable up and down in the machine body, which is elastically biased to open the open state when it pierces the ground surface and rises in a closed state holding a seedling. ,
A regulating body that has a length that contacts the seedling clamping body from the position where the seedling clamping body sticks into the soil surface until the tip of the seedling clamping body leaves the ground surface, and regulates the opening size within a certain range. A seedling holding device for a transplanter, characterized in that the machine body is provided with a seedling holding device.