JPH0221851Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a soil collection device for a rice transplanter that follows the seedling planting operation by a seedling planting claw mechanism and uses a soil collection arm to collect soil from the seedling planting trace.

As shown in Fig. 1, a seedling tray 3 is provided at the rear of the aircraft 1 to supply seedlings 2 from above at the rear, and seedlings 2 are placed from the lower end of the seedling tray 3 by a seedling planting claw 4 pointing rearward. In the case of a so-called rear-tilt type rice transplanter with a seedling stand that takes out the seedlings 2 and plants them in the muddy soil 5, this is done in consideration of the amount of movement of the machine during the time the claws 4 take out the seedlings 2 and plant them in the muddy soil 5. The rotation trajectory of the seedling planting claws 4 is devised so that the seedling planting claws 4 can enter and be removed from the mud while remaining at a certain position regardless of the movement of the machine, but such a device is not conventional. The seedling planting nail 4 is not complete and has plunged into the muddy soil 5.
There is a tendency for the seedlings to be dragged around a little until they are removed, making it difficult to plant the seedlings reliably, and often causing the inconvenience that the seedlings float when the rice field is filled with water after the planting process is completed. For this reason, a spatula-shaped mulch arm that is linked to the seedling planting claw 4 is provided, and when the paw 4 plants the seedling 2 and removes it from the mud 5, the mulch arm is used to fill the groove on both sides where the seedling was planted. Since then, proposals have been made to fill the area with earth.

An example of such a bundling arm is shown in FIGS. 2 and 3. In the figure, the seedling planting claw 4 is driven by a seedling planting claw mechanism 6, and the trajectory of the tip of the claw is reciprocated over the seedling platform 3 and the mud 5 in FIG. The aforementioned seedling planting work will be carried out at the site. A rod 7 is horizontally installed on the back of the seedling planting claw mechanism 6, and a pair of right and left soil collecting arms 8, 8 that sandwich one seedling planting claw 4 are fixed to the rod 7. . Further, the crankshaft 9 is taken out from the seedling planting claw mechanism, and the crank arm 10 of this crankshaft 9 and the link 11 fixed to the rod 7 are connected by a connecting rod 12, so that the crankshaft 9 can be rotated in one direction. Accordingly, the rod 7 is reciprocated by a predetermined angle in synchronization with the seedling planting claw 4, and the mulch arm 8 is accordingly rotated between a raised position shown in solid line and a lowered position (dipped line shown in broken line) in FIG. When the seedling planting claws 4 are removed from the muddy soil 5, the mulching arm 8 performs a predetermined mulching operation on the seedling planting site.

By the way, the rice transplanter is capable of adjusting the planting depth of seedlings, and for this reason, generally, as shown in Fig. 1, a float 13 suspended from the machine body 1 is moved up and down to relatively lower the seedling planting part 14, or By raising it, the depth into which the seedling planting claws 4 penetrate into mud can be varied. Therefore, when the seedling planting depth is adjusted, the mulching arm 8 also moves up and down together, causing the following inconvenience. That is, when the planting depth increases, the plunge depth of the mulch arm 8 into the mud 5 also increases, and when the seedling planting depth becomes shallow, the plunge depth of the mulch arm 8 into the mud 5 also decreases. In the latter case, the amount of soil is too small, and in either case, a suitable amount of soil cannot be obtained. Regardless of the depth of planting, the arm 8 must always plunge into the surface of the mud 5 at a constant depth to backfill the area where the seedlings were planted.

This invention solves this problem by interlocking the seedling planting depth adjustment mechanism that suspends the float with the rod that holds the mulching arm, so that the float and rod can be raised and lowered as a unit. It is characterized by being a mulching device for a machine.

With such a configuration, the planting depth by the seedling planting claw mechanism can be varied by moving the float up and down by an appropriate amount. When the float is lifted, the rod and the mulching arm rise, and the mulching action position of the mulching arm is raised relative to the dead point of the seedling planting claw.If the float is lowered to make the planting depth shallower, the opposite situation occurs. . Therefore, even though the planting depth can be varied by adjusting the height position of the float, the amount of plunge of the mulch arm into the mud remains constant, allowing the predetermined amount of soil to be accurately backfilled at the site where the seedlings were planted. .

Hereinafter, a preferred embodiment of this invention will be explained with reference to the drawings. As shown in Fig. 1, a suspension rod 15 for a float 13 is rotatably supported on the fuselage 1 side by an operating lever 16, and is fixed to the rod 15. A suspension link 17 is attached to a pivot 1 to a receiving metal fitting 18 erected on the upper surface of the float 13 as shown in FIGS. 1 and 4.
The float 13 is connected to the fuselage 1 through the fuselage 9, and is configured such that as the rod 15 is rotated by the operating lever 16, the float 13 is raised and lowered relative to the fuselage 1. That is, elements 15 to 19 constitute a seedling planting depth adjustment mechanism. In addition, the rod 7 on the latch arm 8 side is not supported at both ends by the fuselage 1 as in the past, but is separated from the fuselage 1 and has a rotating link 20 fixed and led out from the float-side rod 15.
It is freely supported only in rotation by the tip boss portion 21 of.

Therefore, when the float 13 is raised or lowered by the operation lever 16, the mulching arm arm rod 7 is also raised or lowered by the action of the rotary link 20, which moves up and down with the rotation of the float rod 15, so that the rod 7 and the mulching arm 8 It also moves up and down in the same direction as the float 13. In this case, raising the float 13 and the earthing arm 8 means lowering the seedling planting part 14 to deepen the seedling planting depth, so the lower dead center of the operation of the seedling planting claw 4 in FIG. The bottom dead center of the shoring arm 8 relative to a (shrinking action position)
As the soil is lifted upward and the planting depth becomes deeper, the mulch action position becomes higher, and the amount of mud plunging of the mulch arm 8 into the mud 5 is kept constant.
In addition, when the float 13 is lowered to make the planting depth shallower, the opposite phenomenon occurs; as the planting depth becomes shallower, the mulching action position becomes lower, and the amount of mud thrusting of the mulch arm 8 into the mud 5 remains unchanged. Regardless of the depth of planting, the mulch arm 8 exerts a constant action on the mud surface.

In addition, if the earth mooring arm 8 is constructed from a metal plate,
Hard foreign objects such as stones are present in the mud, and as the mulching arm 8 comes into contact with it during operation, it is deformed, making it impossible to perform normal mulling work from now on. Therefore, as shown in FIG. 5, the distal end of the shoring arm 8 is made of an elastic body 22 such as rubber, which has a resilient force, or the distal end 8a is used as a bolt/nut tightening tool 23 as shown in FIG.
It would be preferable if it could be exchanged using. In particular, in the case of the elastic body 23, since it is soft against the mud 5, it works to gently bring the mud to the seedling planting site, and unlike metal, it does not cause the mud to pile up as much as it does with impact, making it even more convenient.

[Brief explanation of drawings]

Figure 1 is a side view of a rice transplanter to which this invention is applied.
Figure 2 is a side view showing the positional relationship between the seedling planting claw and the earthing arm and their mutual operating trajectories.
FIG. 4 is an enlarged perspective view of essential parts of one embodiment of the present invention, and FIGS. 5 and 6 are views showing modified configurations of the levying arm. 6... Seedling planting claw mechanism, 7... Rod, 8... Soiling arm, 13... Float, 15-19...
Seedling planting depth adjustment mechanism.

Claims (1)

[Scope of utility model registration request] In a rice transplanter that follows the seedling planting operation by a seedling planting claw mechanism and uses a mulching arm to mulch the seedling planting trace, the rod that holds the mulch arm is linked to the seedling planting depth adjustment mechanism that suspends the float. A mulching device for a rice transplanter, which is configured such that the float and the rod are connected to each other and are raised and lowered integrally.