JPH0142973Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to the structure of a sowing device for a submerged direct sowing machine.

(b) Conventional technology and its problems Conventionally, for example, the seeding device of a flooded direct sowing machine has a shoot pipe connected to the feeding section, and the lower end of the pipe is open near the surface of the field. The system was configured to discharge the fed-out seeds into the field from the lower end of the chute pipe to perform seeding work in the field. However, in a flooded direct sowing machine with such a configuration, mud and muddy water from the field adheres to the lower end of the chute pipe during seeding work, and the seeds being discharged adhere to the lower end of the chute pipe, causing the lower end of the chute pipe to become visible. This caused clogging, making it difficult to perform precise seeding work, and there was a risk of plant loss.

Therefore, there are some devices, such as Utility Model No. 52-805, that are configured to mix and release seeds while blowing air, but if the seeds are dropped while blowing air,
There was a risk that the seeds would be scattered around due to the force of the airflow and would not be reliably fed into the trench.

(c) Means for solving the problem In this invention, the lower end of the chute pipe attached to the float of the flooded direct seeding machine has a double-tube structure consisting of an inner tube and an outer tube, and the outer tube is connected to the blower fan. , the inner cylinder is connected to the hopper, and the lower end of the outer cylinder is positioned lower than the lower end of the inner cylinder, so that seeds are discharged from the lower end of the inner cylinder, and from the gap between the outer cylinder and the inner cylinder. It is an object of the present invention to provide a sowing device structure for a submerged direct sowing machine configured to blow air.

(d) Example The example of the present invention will be explained in detail based on the drawings.
A indicates a submerged work machine, and this submerged work machine A
The main unit a has a prime mover section 1 at the front, a seeding device 2 at the rear, wheels 3 on both sides, a float 4 on the outside of the wheels 3 on both sides, and a steering handle 5 at the rear of the seeding device 2. The vehicle is configured such that the wheels 3 are driven by the power of the prime mover section 1, the steering wheel 5 is used to perform a steering operation, the vehicle travels through the field, and the seeding device 2 performs seeding work.

Here, the structure of the seeding device 2 will be explained as follows.

That is, the seeding device 2 sequentially includes the hopper 6,
It is configured such that a feeding section 7 and a shoot pipe 8 are connected in communication with each other, and seeds in the form of granules stored in a hopper 6 are fed out by the feeding section 7 and discharged from the lower end of the shoot pipe 8.

Such a chute pipe has a double cylindrical structure,
Outer cylinder 10 communicates with blower fan 13 with a predetermined gap s on the outer circumference side of inner cylinder 9 operated by hopper 6
has been established.

Furthermore, while opening the lower end 9' of the inner cylinder 9,
The lower end 10' of the outer cylinder 10 is opened at a position below the lower end 9' of the inner cylinder 9.

Further, an upper plate 11 is attached to the upper end of the outer cylinder 10, and the center part of the upper plate 11 is connected to the outer peripheral side of the inner cylinder 9 to close the upper side of the gap s.
The entire body is supported by an inner cylinder 9.

Further, a hose attachment pipe 12 is attached to the rear part of the circumferential side of the outer cylinder 10 and communicates with the gap s formed in the outer cylinder 10.
are connected to each other via a blowing hose 14.

Further, the blowing fan 13 is disposed behind the prime mover section 1 of the aircraft body a, and is operatively connected to the prime mover section 1.

With this structure, when the blower fan 13 is driven, the lower end 10' of the outer cylinder 10 is passed through the gap s of the double cylinder structure.
It is configured to blow air from the

m indicates the wind emitted from the outer cylinder 10.

Next, the mounting and supporting structure of the lower end of the shute pipe will be explained as follows. That is, the lower end of the chute pipe 8 is connected to the groove plate 1 formed on the float 4.
The float 4 has a notched groove 4' extending forward from the rear edge at the center in the left and right direction, and a groove plate 15 is attached to the front edge of the notched groove 4'. .

The groove forming plate 15 is formed into an inverted L-shape in side view by providing a vertical portion 15-1 having a substantially U-shaped cross section and a horizontal portion 15-2 protruding forward at the lower end of the vertical portion 15-1. ing.

The front side of the vertical portion 15-1 of the groove plate 15 is attached to the front edge of the notched groove 4', and the upper surface of the horizontal portion 15-2 is provided to protrude from the lower surface of the float 4. -2, grooves 17 are formed in the field.

Further, by attaching the outer peripheral side of the outer cylinder 10 of the shoot pipe 8 to the vertical portion 15-1, the lower end portion of the shoot pipe 8 is fixed to the groove plate 15.

Further, at this time, the lower end 10' of the outer cylinder 10 is positioned slightly above the lower end of the groove plate 15.

Note that the left and right shute pipes 8 have the same structure, corresponding to the left and right floats 4, respectively. In the figure, 16 is a soil cover plate and 17 is a trench formed in the field.

(E) Function The embodiment of this invention is constructed as described above, and this submerged direct seeding machine A drives the wheels 3 on both sides by the power of the prime mover section 1 to travel in the field, and the groove plate 15 A groove 17 is formed on the field surface in the horizontal part 15-2 of the field, and seeds are discharged into the groove 17 from the lower end 9' of the inner cylinder 9 of the chute pipe 8 through the feeding part 7 from the hopper 6, and then the seeds are released by the soil cover plate 16. The seeding work is done by covering the soil with soil.

Moreover, at this time, by driving the ventilation fan 13,
By blowing air from the blower fan 13 through the air hose 14 into the gap s in the outer cylinder 10, air is blown from the lower end 10' of the outer cylinder 10 through the gap s, so that Air curtains are formed on the sides, and even if muddy water from the field splashes up, the muddy water etc. is pushed back from the lower end 9' of the inner cylinder 9 to the lower end 10' of the outer cylinder 10 by the wind pressure of the air discharge m. It is possible to prevent muddy water from adhering to the lower end 9' of the inner cylinder 9,
The chute pipe 8 is prevented from clogging, and the discharge of seeds is not hindered.

Furthermore, even if drops of muddy water or the like have already adhered to the lower end 9' of the inner cylinder 9, the air blown from the prime mover 1 has a certain amount of heat, so the seeds will adhere to the inner cylinder 9 as they will dry immediately. There is no need to worry about clogging.

Furthermore, since the lower end 10' of the outer cylinder 10 is positioned lower than the lower end 9' of the inner cylinder 9, even if muddy water is splashed heavily, only a small amount of mud will adhere to the inner circumference of the outer cylinder 10, and the inner cylinder This prevents muddy water and the like from adhering to the lower end 9' of 9.

Further, even if the lower end of the chute pipe 8 comes into contact with the field surface due to the descent of the machine body a, the lower end 9' of the inner cylinder 9 does not come into contact with the field surface. Therefore, accurate seeding work can be carried out based on the constant cycle set by the feeding section 7.

Furthermore, an air curtain is formed by blowing air around the seeds to be released, and the air curtain prevents the seeds from scattering.

Moreover, since the lower end 10' of the outer cylinder 10 is located below the lower end 9' of the inner cylinder 9, the air blows into the inner cylinder from the lower end 9' of the inner cylinder 9, making it possible to release the seeds. I try to do it in a narrow area and in a vertical position.

(f) Effect According to this invention, the lower end of the chute pipe has a double-tube structure consisting of an inner cylinder and an outer cylinder, and the lower end of the outer cylinder is positioned lower than the lower end of the inner cylinder, so that seeds, etc. can be removed from the lower end of the inner cylinder. By configuring the structure so that air can be discharged and blowing air from the gap between the outer cylinder and the inner cylinder, it prevents clogging of the lower end of the chute pipe due to adhesion of mud, muddy water, and seeds, and allows for precise sowing without causing plant dropouts. This has the effect of allowing work to be done.

Furthermore, an air curtain is formed by blowing air around the seeds to be released, and the air curtain prevents the seeds from scattering, thereby making it possible to perform the seeding operation reliably.

Moreover, by discharging the seeds vertically and within as narrow a range as possible, the seeds can be reliably supplied into the furrow.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a perspective view of the main part of the same example, and FIG. 3 is a sectional view of the main part. A: Submerged direct seeding machine, a: Machine body, 2: Seeding device,
8: Shute pipe, 9: Inner cylinder, 9': Lower end, 1
0: Outer cylinder, 10': Lower end, 13: Ventilation fan, 1
4: ventilation hose, s: gap.

Claims (1)

[Scope of utility model registration request] The lower end of the shoot pipe 8 attached to the float 4 of the submerged direct seeding machine has a double cylinder structure consisting of an inner cylinder 9 and an outer cylinder 10, and the outer cylinder 10 is connected to the blower fan 13, and the inner cylinder 9 is connected to the hopper 6. In addition, the lower end 10' of the outer cylinder 10 is positioned lower than the lower end 9' of the inner cylinder 9, and the seeds are released from the lower end 9' of the inner cylinder 9. A sowing device structure of a submerged direct sowing machine configured to blow air from a gap s of a cylinder 9.