JPH0224410Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is configured so that the mulching arm that presses soil from the side onto the planted seedlings is driven up and down in synchronization with the planting mechanism, and the relative movement of the mulching arm and the planting mechanism. This relates to a rice transplanter equipped with a timing adjustment mechanism.

Conventionally, in the above-mentioned rice transplanter, a cam attached to a rotating shaft interlocking with the planting mechanism is linked to an arm that swings integrally with the mulch arm, so that the mulching arm is driven up and down in synchronization with the planting mechanism. Then, a cam that is spline-fitted to the rotating shaft is installed around the shaft so that enough soil can be collected at the base of the planted seedlings in shallow planting conditions, and to prevent too much soil from being collected in deep planting conditions. The structure was such that the activation timing of the anti-planting mechanism of the earth mooring arm could be adjusted by changing the posture.

The conventional drawbacks are as follows. In other words, each time the planting depth changes, the operator must loosen the mounting bolts, remove the cam, adjust the mounting position so that the activation timing matches the planting depth, and then tighten the cam bolts. First, the adjustment operation is troublesome, and setting the amount of adjustment is difficult.If you make a mistake in the amount or direction of adjustment, or forget to perform the adjustment, you may end up not being able to obtain a sufficient sloughing effect, or using more than necessary. There was a risk that the soiling would worsen the seedling posture.

In view of the above-mentioned circumstances, the purpose of the present invention is to easily and reliably adjust the activation timing of the anti-planting mechanism of the earthing arm in accordance with the planting depth.

The characteristic structure of the present invention is that, in the rice transplanter mentioned above, the actuation timing adjustment mechanism of the mulch arm is interlocked with the planting depth adjustment mechanism, and the actuation timing is reversibly delayed as the planting depth is adjusted. , its effects are as follows.

In other words, the activation timing of the anti-planting mechanism of the mulch arm becomes slower as the planting becomes deeper, so as shown in Fig. 4A, in a shallow planting state where the number of seedlings to be planted has not yet been established, the mulch arm 11 is moved earlier. It is now possible to lower the soil and push it into the field, gathering a large amount of soil over a long area from the front to the rear of the seedlings, thereby preventing the seedlings from falling over, as shown in Figure 4 B. In a deep planting state where the seedlings have already been planted,
By delaying the protrusion timing of the earth mooring arm 11,
Only a portion of the soil collected by the soil collection arm 11 is lightly collected at the base of the seedling n, and by collecting a large amount of soil, the seedling n falls due to an imbalance in the amount of soil collected by the left and right soil collection arms 11. It is now possible to avoid the inconvenience of easy planting, and it has become possible to appropriately adjust the timing of the anti-planting mechanism operation of the earth-harvesting arm 11 in accordance with the planting depth.

Moreover, if the planting depth is adjusted, the activation timing of the anti-planting mechanism of the earth mooring arm will automatically be adjusted appropriately as described above, commensurate with the planting depth.
The troublesome adjustment operations required in the past are no longer necessary, and furthermore, it is now possible to reliably avoid the inconvenience of not being able to properly fill the earth due to mistakes or forgetting to perform adjustment operations.

As a result, regardless of the planting depth, the activation timing of the anti-planting mechanism of the mulch arm can be adjusted appropriately to sufficiently prevent the planted seedlings from falling over, and the adjustment is simple and easy. It is now possible to provide a rice transplanter that has excellent seedling planting performance and operability and is free from the risk of seedling collapse due to poor soil bundling caused by operational errors or forgetfulness.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, a vehicle body 3 includes a pair of left and right steerable front driving wheels 1 and a pair of left and right driving rear wheels 2, a prime mover 4, a body control panel 5, a steering handle 6, and a driving unit 7. A riding-type rice transplanter is constructed by equipping the rear of the vehicle body 3 with a seedling planting device consisting of an inclined seedling platform 8, a planting mechanism 9, a plurality of soil leveling floats 10, and the like.

In the seedling planting device, as shown in FIG. 2, the pine-shaped seedlings placed on the seedling stand 8 are moved by the planting claw 9a at the tip of the planting mechanism 9, which circulates and reciprocates up and down. After each seedling is cut out and planted one after another on a field leveled by the soil leveling float 10, the planted seedlings are moved on both sides by a pair of earth mooring arms 11 that swing up and down in synchronization with the planting mechanism 9. The soil is pressed against the seedling side to fill in the holes formed by the planting claws 9a in the field during planting, and the mud is pressed against the roots of the seedlings to suppress the seedlings from falling over. be. In addition, each float 10 attached to the aircraft body so as to be able to swing up and down is connected to a lever 1 extending from a horizontal float support shaft 13 to which a float support arm 12 is attached.
The planting depth adjusting mechanism 14 is configured so that the desired planting depth can be obtained by raising and lowering the plant integrally with respect to the machine body by the operation 3a. A spring 17 is attached to a swinging arm 16 fixed to one end of a support shaft 15 on which two earthing arms 11 are arranged for each planting mechanism 9.
At the same time, the cam 20 connected to the rotating shaft 19 of the planting transmission case 18 acts on the swinging arm 16 to synchronize the mulching arm 11 with the planting mechanism 9. and raise and lower it.

As shown in FIG. 3, the rotating body 21 fixed to one end of the rotating shaft 19 and the cylindrical body 22 which is slidable in the axial center A shaft 23 with a cam 20 attached to the tip of the spline is splined to the cylindrical body 22 so that the rotating body 21 displaces around the axis as it moves, engaging through teeth with an inclined joint surface S. After fitting and holding, the cylindrical body 22 is moved and rotated by operating the shift fork 24, and the mounting posture around the rotational axis It is configured such that the operation timing of the anti-planting mechanism 9 can be adjusted.

Furthermore, the shifter 25 to which the shift fork 24 is fixed and the planting depth adjustment mechanism 14 are linked via a wire 26 so that the timing of activation of the mulch arm 11 is delayed as the adjustment mechanism 14 adjusts the planting depth. When connected and in the shallow planting state, the cylindrical body 22 is moved upward in FIG. The cam should be brought into the field early to collect enough soil at the base of the planted seedlings n to prevent them from falling over, and when the seedlings are planted deeply, the cylindrical body 22 should be moved downward in FIG. 20 in the direction opposite to the rotational direction of the rotary shaft 19, and as shown in FIG. The structure is configured so as not to cause the seedlings to fall over, and the adjustment operation can be performed easily and reliably to prevent the fall of the seedlings due to poor soil collection caused by operational errors or forgetfulness. It has been done.

Next, another example will be described.

The mulch arm 11 can be changed as appropriate in its shape, mounting structure, etc. For example, the swing arm 16 of the mulch arm 11 may be operatively connected to the drive shaft of the planting mechanism 9 via a rod. Furthermore, in order to adjust the timing of the operation of the anti-planting mechanism 9 of the soil gathering arm 11, the support shaft 15 of the swinging arm 16 is
The mounting angle may be changed in conjunction with the planting depth adjustment mechanism 14, and these are collectively referred to as an operation timing adjustment mechanism A.

Further, the specific configuration for adjusting the planting depth can be changed as appropriate, and the planting depth adjustment mechanism 14 may be one that vertically adjusts the entire planting mechanism 9 with respect to the float 10.

The present invention may be applied to a walking rice transplanter.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an overall side view of the rice transplanter, Fig. 2 is a side view of the seedling planting device, Fig. 3 is a sectional view of the main part, and Fig. 4 A and B are soil bundling. It is a sectional view showing a state. 9... Planting mechanism, 11... Soil arm, 14
...Planting depth adjustment mechanism, A...Operation timing adjustment mechanism, n...Planting seedlings.

Claims (1)

[Scope of utility model registration request] A mechanism A that is configured to move the mulch arm 11 that presses soil from the side onto the planted seedlings n up and down in synchronization with the planting mechanism 9, and adjusts the relative timing of operation between the mulch arm 11 and the planting mechanism 9. In a rice transplanter equipped with
This rice transplanter is configured such that an operation timing adjustment mechanism A of No. 1 is interlocked with a planting depth adjustment mechanism 14, and the operation timing is reversibly delayed as the planting depth is adjusted.