JPH0347458Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is attached to the planting section of a riding-type or walking-type rice transplanter to obtain intermittent motion from the crank motion of the planting claw, and to feed the rice transplanter. This relates to a side-row fertilizer applicator that drives a roll to rotate and sows root fertilizer at a distance from the planted seedlings to improve binding.

(b) Prior art Conventionally, in the power transmission configuration of fertilizer applicators,
The technique of interposing a one-way clutch is known.

For example, there is a technique described in Japanese Utility Model Application Publication No. 49-143316.

However, the one-way clutch installed in the prior art is configured so that even if the feeding section of the fertilizer applicator is accidentally rotated in the opposite direction, the feeding device will not be damaged due to the reverse rotation. It is a one-way clutch, and is different from the one-way clutch 6 which is used in the case where a blockage occurs in the dispensing device, as in the present invention.

(c) Purpose of the invention This invention is a fertilizer dispensing device in which the dispensing roll becomes clogged with fertilizer during forward rotation, making further rotation impossible and causing the coupling pins in other parts to shear. A safety clutch is provided in case the repair or replacement takes time.

In addition, a safety clutch device is installed on the outer periphery of the one-way clutch case installed on the coupling shaft to ensure that the safety clutch works reliably and so that there is no need to replace the pin even after the safety clutch is disengaged. be.

(d) Means for solving the problems The problems to be solved by this invention are as described above.
Next, means for solving the problem will be explained.

Attaching the extraction arm 1 to the planting claw 12 of the rice transplanter,
An interlocking link 2 is connected to the extraction arm 1, an arm 3 is connected to the upper end of the interlocking link 2, and the arm 3 is connected to the upper end of the interlocking link 2.
is fixed to the one-way clutch case 4, a ball locking body 5 is interposed inside the one-way clutch case 4, and the ball locking body 5 and the coupling shaft 27 are interposed.
In a configuration in which a one-way clutch 6 is interposed between the one-way clutch case 4 and the coupling shaft 27 to drive the fertilizer application machine intermittently, a ball B is interposed between the one-way clutch case 4 and the ball locking body 5, and the ball B is pressed by a spring 22, and a safety clutch is constructed between the one-way clutch case 4 and the ball locking body 5.

(E) Embodiments and operations The problems to be solved by the present invention and the means for solving them are as described above. Next, the embodiments shown in the drawings and their operations will be explained.

Figure 1 is an overall side view of a 5-row riding rice transplanter with a side row fertilizer applicator attached to the planting section, Figure 2 is a partial cross-sectional side view of the side row fertilizer applicator, and Figure 3 is a side view of the side row fertilizer applicator. , Rear view of the left three rows of the side row fertilizer applicator, Figure 4.
FIG. 5 is a rear view and a side view showing the crank arm portion and one-way clutch portion of the planting claw. Figure 6 shows
FIG. 3 is a rear sectional view of the feeding case and the interlocking link portion. FIG. 7 is a side sectional view of the feeding case.

Referring to FIG. 1, a five-row riding rice transplanter will be briefly explained. 24 is a front wheel, 25 is a rear wheel, 32 is a steering handle, and 31 is a seat.

A planting device is attached to a three-point link type mounting device, and a float 9, a seedling stand 7, a planting drive case 10, a planting claw 12, etc. are moved up and down. 11 is a hopper.

Referring to FIGS. 2 and 3, the outline of the side row fertilizer applicator will be explained. A support post 18 projects upward from the planting drive case 10, and a fertilizer applicator support frame 17 is provided horizontally at the upper end thereof. An upper roll case 14 of a fertilizer applicator for each row seedling is fixed to this fertilizer applicator support frame 17. A cap 13 is fixed to the upper roll case 14, a hopper 11 is fixedly installed thereon, and a hopper lid is placed on the cap 13.

Further, a lower roll case 15 is fixedly installed on the lower surface of the upper roll case 14, and a guide pipe 20 extends from the lower end of the lower roll case 15 to the groove cutter. The guide pipe 20 and the groove cutter are supported by a support pipe 19 that projects downward from the fertilization support frame 17. As shown in Figure 6, planted nail 1
The take-out arm 1 is fixed to the crank driven arm 33 of No. 2.

First, the shaft hole 1b of the bell crank-shaped take-out arm 1 is fitted into the crank driven shaft 34, and the U-shaped opening 1a at the other end is inserted between the planting claw 12 and the crank driven arm 3.
It is fitted into a shaft 35 that connects 3. After the take-out arm 1 is installed, the crank driven arm 33
It is set by the set nut.

The rotation of the take-out arm 1 is transmitted via the pin 45 and the interlocking link 2 to the arm 3 of the one-way clutch case 4 via the pin 30. A one-way clutch device is mounted on the coupling shaft 27. The one-way clutch device is composed of a clutch case 4, one-way clutch 6, a ball locking body 5, a ball B, a spring 22, a spring case 21, an adjusting screw 23, and the like.

The rotation from the planting claw is first transmitted from the arm 3 to the clutch case 4, and then transmitted via the ball B to the ball locking body 5, one-way clutch 6, and coupling shaft 27 in this order. Fertilizer drive shafts 28 and 29 are inserted into the coupling shaft 27 from both sides, and power is transmitted through pins 50 and 51.

The intermittent rotation of the planting claw drive shaft 28 is carried out by the bevel gear 4.
1, 42 to the roll drive shaft 36,
A roll drive shaft 36 rotates a payout roll 38. The roll upper cover 40 and the roll lower cover 39 are respectively connected to the upper roll case 14 and the lower roll frame 1.
5 and does not rotate, the roll top cover 40
The fertilizer enters the penetration hole of the feed roll 38 through the opening, rotates about 180 degrees, and falls onto the field through the drop hole of the roll lower cover.

A spring receiver 46 and a screw conveyor 16 are fixed to the roll drive shaft 36, and a spring 53 biases the roll lower cover 39, the feeding roll 38, and the roll upper cover 40 from below.

As shown in FIGS. 4 and 5, the arm 3 of the one-way clutch case 4 has holes 3a opened in five stages for connecting the interlocking link 2, and by replacing the holes 3a with a pin 30, The rotation speed of intermittent rotation can be adjusted. As a result, the amount of fertilizer applied can be adjusted. Adjustment using the holes 3a is performed by making the spacing between the fertilizer application positions coarser and finer, and the amount of fertilizer fed out at one time is adjusted by scraping off the fertilizer on the through-hole with the adjusting piece 37 shown in FIG. .

8 and 9 are drawings showing an embodiment of the safety clutch, in which a one-way clutch case 4 is loosely fitted around the outer periphery of a coupling shaft 27, and the case 4 itself is rotated by the arm 3.

As a result, the ball locking body 5 is rotated via the ball B of the safety clutch. The safety clutch 6 rotates with the coupling shaft in only one direction, leaving the coupling shaft as it is when returning.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, even if the safety clutch breaks, maintenance is easy because there is no need to replace the shear pin, and since the shear pin can be cut close to the planting claw, which is the drive source, there is no need to worry about any part of the fertilizer spreader becoming clogged. The safety clutch will operate even if the

Second, since it is provided in the one-way clutch case 4 and a safety clutch is constructed between the one-way clutch case 4 and the coupling shaft 27,
Even for simultaneous driving of two threads connected to the coupling shaft 27, only one set of safety clutches is required.

Third, since the ball B is placed in the one-way clutch case 4 to form a safety clutch, there is no need to provide a safety clutch in the feeding device.

[Brief explanation of the drawing]

Figure 1 is a full side view of a five-row riding rice transplanter with a side-row fertilizer applicator attached. Figure 2 is a partial cross-sectional side view of the side row fertilizer applicator. Figure 3 is a rear view of the three rows on the left side of the side row fertilizer applicator. 4 and 5 are a rear view and a side view showing the crank arm portion and one-way clutch portion of the planting claw. FIG. 6 is a rear sectional view of the feeding case and the interlocking link. FIG. 7 is a side sectional view of the feeding case. Figures 8 and 9 are drawings of the safety clutch and one-way clutch. B... Safety clutch ball, 4... One-way clutch case, 5... Ball locking body, 6...
One-way clutch, 12...planted nail.

Claims (1)

[Scope of utility model registration request] Attaching the extraction arm 1 to the planting claw 12 of the rice transplanter,
An interlocking link 2 is connected to the extraction arm 1, an upper end of the interlocking link 2 is connected to an arm 3, and the arm 3
is fixed to the one-way clutch case 4, a ball locking body 5 is interposed inside the one-way clutch case 4, and the ball locking body 5 and the coupling shaft 27 are interposed.
In a configuration in which a one-way clutch 6 is interposed between the one-way clutch case 4 and the coupling shaft 27 to drive the fertilizer application machine intermittently, a ball B is interposed between the one-way clutch case 4 and the ball locking body 5, and the ball B is A driving device for a side row fertilizer applicator characterized in that a safety clutch is configured between a one-way clutch case 4 and a ball locking body 5 by being pressed by a spring 22.