JPH0126177Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push-out roll in a single-seed mechanical seeding machine that sows seed grains one by one at each point.

More specifically, a feed-out roll is provided at the discharge port of the seed hopper so that the outer peripheral surface serves as a bottom plate to dam the seed grains in the seed hopper flowing out through the discharge port, and the feed-out roll is A recess is formed on the outer peripheral surface of the recess that is large enough to fit only one seed grain to be sown, and a recess is formed on the outer peripheral surface of the recess at a position facing the discharge port in front of the rotation direction of the reel roll. A kick-out roll that rotates while sliding on the outer circumferential surface is provided, and several seed grains are caught in incorrect postures in addition to one seed grain that has fit into the recess on the outer circumferential surface of the pay-out roll. This push-out roll repels the grains that are being carried out, leaving only one seed grain stuck in the recess, and only that one seed grain is fed out. This invention relates to an improvement in a push-out roll in a single-seed mechanical seeding machine configured to perform spot sowing of one seed at a time.

This type of single-seed mechanical seeding machine uses a recess of a size corresponding to a single seed provided on the circumferential surface of a delivery roll to feed the seed into a single seed that is fitted into the recess. The roll that removes only the seeds from the grains will determine the performance. In order to reliably scrape out all seed grains other than the one seed grain that has fallen into the cavity, the push-out roll is a rubber roller molded from a rubber material and is pressed against the circumferential surface of the pay-out roll. If this is done, the seed grains will be crushed and germination problems will occur after sowing.
In addition, to avoid crushing the seed grains, it is better to use a sponge roll or a brush roll as the roll to slide against the circumferential surface of the roll, which may be good at the beginning of use, but may cause wear and deformation. Sooner or later, it begins to lose its ability to leave only the single seed that has fallen into the depression. This is because it is difficult to simultaneously satisfy both of the requirements of elastically sliding on the peripheral surface of the feed roll to prevent seed grains from being crushed, and of forming the roll so as to maintain wear resistance.

The present invention was devised in order to solve the problems of the conventional technology, and prevents the seed grains from being crushed by elastically pressing against the peripheral surface of the feed roll. It is an object of the present invention to provide a means for configuring a push-out roll of a single-seed mechanical seed sowing machine that has sufficient wear resistance while doing so.

The present invention was completed based on the results obtained through various studies and experiments for the above-mentioned purpose. In other words, a sponge-like roll main body is formed from an elastic material such as neoprene sponge, and a thin rubber layer made of a wear-resistant rubber material such as neoprene rubber is layered on the outer peripheral surface of the roll. The rubber layer adhered to the outer circumferential surface in a thin layer follows the elasticity of the spongy roll main body and elastically presses against the circumferential surface of the payout roll. As time progressed, it became possible to effectively prevent the crushing of seed grains while reliably removing all seed grains other than the one seed grain that had fit into the recess from the circumferential surface of the feeding roll. This work was completed based on the result that the thin rubber layer adhered to the outer peripheral surface of the main body of the roll maintained sufficient wear resistance.

Therefore, in the present invention, as a means to achieve the above-mentioned object, the outer circumferential surface of the seed hopper dams the seed grains in the seed hopper flowing out through the discharge port. A feed-out roll serving as a bottom plate is provided, and a recess is formed on the outer circumferential surface of the feed-out roll to a size that allows only one seed grain to be sown to fit therein, and the above-mentioned discharge roll is formed in front of the feed-out roll in the rotational direction. In a single-seed mechanical drop-type seeding machine equipped with a push-out roll that rotates in sliding contact with the outer peripheral surface of the feed roll at a position facing the outlet, the push-out roll is made of a resilient material such as neoprene sponge. It is made up of a sponge-like roll main body made of a material and a thin rubber layer made of a wear-resistant rubber material such as neoprene rubber and wrapped and adhered to the outer peripheral surface of the roll main body. This paper proposes a push-out roll in a mechanical seeding machine for single-seed seeding.

Next, embodiments will be described in detail with reference to the drawings.

In FIG. 1, A is a mechanical seeding machine, and the discharge port 11 of the seed hopper 1 is provided with a recessed part 21 formed in the outer periphery to a size that allows one seed grain S to be sown to fit therein. A roll 2, a push-out roll 3 that rotates so as to slide on the outer peripheral surface of the pay-out roll 2 and push out seed grains other than the one seed that has fitted into the recess 21, and a lower part of the pay-out roll 2. It consists of an opener 4 located at

As shown in FIG. 2, the feed roll 2 is provided with an annular groove 22 concentric with the outer circumferential surface at a portion slightly closer to the axis than the outer circumferential surface, and the outer circumferential side of the groove 22 is formed in the depression. It communicates with the bottom of the portion 21 through a communicating portion 23 . A frame 5 is placed in the groove 22.
An extrusion pawl 6 fixed to the recess 21 is inserted, and as the feed roll 2 rotates, the pawl portion 61 of the extrusion pawl 6 faces the communication portion 23 of the recess 21 in pressure contact.

As shown in FIG. 3, the push-out roll 3 has a spongy roll main body 31 made of an elastic material such as neoprene sponge, and its outer peripheral surface is made of a resilient material such as neoprene rubber. Surrounded by a rubber layer 32 made of a thin layer of abrasive material,
It is constructed by adhering to the outer peripheral surface of the roll main body 31.

The push-out roll 3 and the pay-out roll 2
are adapted to rotate counterclockwise (in FIG. 1) using the rotational force of the running wheels 7 shown in FIG. 4 as a driving source. In Figure 4, 8 is a soil covering rod, 9
is the suppression wheel, B is the seeding unit, f is the fertilizer hopper,
g is the seed bed.

The embodiment device constructed in this manner operates as follows.

When the rotary fertilizer seeding machine shown in FIG. 4 is towed in a field by a tractor (not shown), the feed-out roll 2 and the push-out roll 3 of the single-seed mechanical seeding machine A are rotated by the rotation of the running wheels 7, respectively. In FIG. 1, it rotates counterclockwise.

The plurality of seed grains S, which are scooped out by the recess 21 provided on the outer circumferential surface of the feed roll 2 at the discharge port 11 of the seed hopper 1, rotate in sliding contact with the outer circumferential surface of the feed roll 2. The push-out roll 3 leaves one seed grain S that has fit into the recess 21 and repels the other seed grains toward the seed hopper 1 side, so that only one seed grain S is fed out. Then, the seeds are sown on the seed bed g formed by the opener 4.

At this time, the push-out roll 3, which rotates in sliding contact with the outer circumferential surface of the feed-out roll 2, touches the outer circumferential surface of the roll main body 31 formed in a spongy shape from an elastic material.
A thin rubber layer 32 made of a wear-resistant rubber material
Since the thin rubber layer 32 on the outer peripheral side is elastically supported by the sponge-like roll main body 31, the seed grains S on the peripheral surface of the feeding roll 2 are The seed hopper 1 comes to come into elastic pressure contact with the seed grains S, and securely removes the seed grains S other than the one seed grain S that has correctly fitted into the recess 21 without causing any crushing of the seed grains S. It starts to bounce back to the side. The abrasion resistance of this thin rubber layer 32 that comes into sliding contact with the seed grains S makes it possible to cope with abrasion.

As explained above, the push-out roll in the single-seed mechanical seeding machine according to the present invention has an outer circumferential surface that is connected to the discharge port 11 of the seed hopper 1 through the discharge port 11. Seed grain S...
A feed-out roll 2 that serves as a bottom plate for damming is provided, and a recess 21 is provided on the outer peripheral surface of the feed-out roll 2, the size of which allows only one seed grain S to be sown to fit therein.
..., and a single-grain seeding mechanical type with a push-out roll 3 that rotates in sliding contact with the outer peripheral surface of the feed-out roll 2 at a position facing the discharge port 11 in front of the feed-out roll 2 in the rotational direction. In the seeding machine, the push-out roll 3 is made of a sponge-like roll main body 31 made of an elastic material such as neoprene sponge, and a thin layer made of a wear-resistant rubber material such as neoprene rubber. Role main 3
1, the wear-resistant thin rubber layer 32, which forms the outer circumferential surface of the push-out roll 3, With the elasticity of the sponge-like roll main body 31 made of an elastic material, it comes into sliding contact with the seed grains S existing on the outer peripheral surface of the feed-out roll 2, and the blow-out roll 3 is crushed into seed grains S. While ensuring that the seed grains S other than the one seed grain S that has fit into the recess 21 provided on the circumferential surface of the feed roll 2 in the correct posture are repelled without causing any The wear resistance of the output roll 3 can be maintained reliably.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view of a mechanical seeding machine equipped with the push-out roll of the present invention, Figure 2 is a sectional view taken along the line shown in Figure 1, and Figure 3 is an enlarged view of the push-out roll portion of Figure 1. A side view and an enlarged perspective view, and FIG. 4 is a perspective view of a rotary seeding machine incorporating the mechanical seeding machine of FIG. 1. Explanation of drawing symbols, A... Mechanical seeding machine, B...
Seeding unit, S... Seed grain, f... Fertilizer hopper, g... Seeding bed, 1... Seed hopper, 11...
...discharge port, 2...feeding roll, 21...recess,
22... Annular groove, 23... Communication portion, 3... Splashing roll, 31... Roll main body, 32... Rubber layer, 4... Opener, 5... Frame, 6...
Extrusion claw, 61...claw portion, 7...running wheel, 8...soil covering bar, 9...pressing wheel.

Claims (1)

[Scope of utility model registration request] A feed-out roll 2 is provided at the discharge port 11 of the seed hopper 1, and the outer circumference of the feed-out roll 2 serves as a bottom plate for damming the seed grains S in the seed hopper 1 flowing out through the discharge port 11. On the surface, a recess 21 is formed that is large enough to fit only one seed grain S to be sown, and at a position facing the discharge port 11 in front of the rotation direction of the feed roll 2,
In a single-seed mechanical seeding machine equipped with a push-out roll 3 that rotates in sliding contact with the outer peripheral surface of the feed-out roll 2, the push-out roll 3 is made of a sponge made of an elastic material such as neoprene sponge. It is characterized by being formed by a roll main body 31 having a shape, and a thin rubber layer 32 formed of a wear-resistant rubber material such as neoprene rubber and wrapped around the outer peripheral surface of the roll main body 31 and bonded. A push-out roll in a single-seed mechanical seeding machine.