DE202023100171U1 - Sowing coulters for seed drill - Google Patents

Abstract

Sowing coulters (1) for sowing machines, of a kind used for sowing machines, alone or in groups with a variable number of other similar sowing coulters (1) for sowing seed in the channels opened by each of these sowing coulters (1), on the sowing coulters (1) a seed supply tube (4), a mono or sowing disc (5) angled to the direction of advance, a front cover wheel (7) and a front cutting disc (8) are fitted; characterized in that it includes:
- a multi-coulter assembly (2) articulated and adaptable in a parallelogram, in which the seed supply tube (4), the sowing disc (5) and the cover wheel (7) are mounted;
- a front rocker (9) connected by a joint (90) to a lower part of the multi-coulter unit (2), at the free end of which the cutting disc (8) is fixed, and
- a return element (91) connecting the rocker (9) and the multi-coulter assembly (2).

Description

PURPOSE OF THE INVENTION

The present invention relates to a coulter for seed drills, comprising a monodisc and a front cutting disc for cutting stubble, all in a single housing.

BACKGROUND OF THE INVENTION

Sowing coulters for sowing machines are currently known, used in sowing machines individually or in groups with a variable number of other equal coulters for sowing seeds in troughs opened specifically for this purpose by each of these sowing coulters, and in which a seed supply tube, a monodisc -Seeder forming a certain angle to the direction of feed, a grain breaker wheel and a cover wheel are mounted so that when the monodisc seeder touches the ground, a trough opens where the seeds coming out of the supply tube are sown, the then be embedded in the soil by the grain breaker wheel, and finally the cover wheel covers the seeds with the soil removed when opening the chute, also including a previous cutting disc for cutting stubble encountered by the seed coulters as they advance.

In this type of coulters with sowing disc and cutting disc, the cutting disc has an adaptability to the terrain independent of the sowing disc, but with a small reach, so the cutting disc gives way to the sowing disc; sometimes, depending on the obstacles encountered (heavy roots or stones), there may be no obstacle cut and/or there may be a jump that would cause the seed disc seeds to fall into the air so that they would not germinate and would cause a seeding error.

DESCRIPTION OF THE INVENTION

• - eine gelenkige und anpassungsfähige Parallelogramm-Multi-Säscharen-Baugruppe, in dem das Saatgutversorgungsrohr, die Monoscheiben-Sämaschine und das Deckelrad montiert sind,
• - eine vordere Schwinge, die durch ein Gelenk mit einem unteren Bereich der Multi-Säscharen-Baugruppe verbunden ist, an dessen freiem Ende die Schneidscheibe befestigt ist, und
• - ein Rückholelement, das die Schwinge und die Multi-Säscharen-Baugruppe miteinander verbindet.

The coulters for sowing machines according to the invention are of the type used in sowing machines, alone or grouped with a variable number of other same coulters for sowing seeds in gutters opened specifically for this purpose by each of the coulters, and where a seed supply tube, a monodisc seeder forming a certain angle to the direction of advance and a cover wheel are mounted, and include a previous cutting disc for cutting stubble; which according to the invention comprises:

• - an articulated and adaptable parallelogram multi-coulter assembly in which the seed supply tube, the monodisc seeder and the cover wheel are mounted,
• - a front rocker connected by an articulation to a lower part of the multi-coulter assembly, to the free end of which the cutting disc is fixed, and
• - a return element that connects the swing arm and the multi-coulter assembly.

This creates a deformable parallelogram, which allows a weight load to be transferred to the cutting disc and, at the same time, a firm support for the coulters of the cutting disc, allowing the contact of the seed disc and the cover wheel with the ground to be optimally regulated in order to optimize the sowing performance . In addition, however, it is achieved that the cutting disc can have an adaptation to the ground independently of the sowing disc, in addition to that offered by the multi-coulter assembly, which allows it to rise and fall following the bumps, eliminating planting errors due to lack of ground contact be minimized, but also the cut is already improved, which facilitates the attack of the cutting disc on the obstacle, adapting to the entire contour of the latter accessible by the movement of the rocker, thereby facilitating the rotation of the cutting disc itself and cutting into the obstacle.

Optionally, a grain crusher wheel can be placed in the pivot assembly, also adjusting the force it exerts on the ground (this is not essential).

character list

• shows a view of the coulters according to the invention.

DESCRIPTION OF AN EMBODIMENT OF THE INVENTION

• - eine in einem Parallelogramm gelenkige und anpassbare Multi-Säscharen-Baugruppe (2), in der das Saatgutversorgungsrohr (4), die Säscheibe (5), ein Kornbrecher (6) (optional, falls vorhanden) und das Deckelrad (7) montiert sind;
• - eine durch ein Gelenk (90) mit einem unteren Bereich der Multi-Säscharen-Baugruppe (2) verbundene vordere Schwinge (9), an deren freiem Ende die Schneidscheibe (8) befestigt ist, und
• - ein Rückholelement (91), das die Schwinge (9) und die Multi-Säscharen-Baugruppe (2) miteinander verbindet.

The invention, not shown, coulters (1) for seeders is of the type used in seeders, alone or grouped with a variable number of other similar coulters for sowing seeds in the open channel of each of these coulters, on the coulters (1) a seed supply tube (4), a sowing disc (5) angled to the direction of advance, a front cover wheel (7) and a cutting disc (8) are fitted, with a grain breaker wheel also being fitted (6) may be appropriate, which according to the invention comprises:

• - a multi-coulter assembly (2) articulated in a parallelogram and adaptable, in which the seed supply tube (4), the seeding disc (5), a grain breaker (6) (optional, if present) and the cover wheel (7) are mounted ;
• - a front rocker (9) connected by a joint (90) to a lower part of the multi-coulter unit (2), at the free end of which the cutting disc (8) is fixed, and
• - a return element (91) connecting the rocker (9) and the multi-coulter assembly (2).

The articulated and adaptable parallelogram multi-coulter assembly (2) comprises, in this non-limiting example, an upper coulter (21) articulated to a main support (22a) provided with anchorages (22a) at its top for attachment to the seeder , a lower coulter (25) articulated at the rear end of the upper coulter (21) and a rear extension (25a) angled below, indivisible and in one piece with said lower coulter (25) on which the seed supply pipe (4), the sowing disc (5), an optional grain breaker wheel (6) and the cover wheel (7) are mounted; and a coulter (23) closing the multi-coulter (2) and articulated to a front extension (22b) of the main beam (22) and to the lower coulter (25). In It can be seen how the lower coulter (25) of the multi coulter assembly (2) goes from end to end, carrying the wheels and monodisc and is the same part going forward to close the swingarm (9). hold.

Furthermore, it is preferred that the articulation (90) is arranged in the front part of the lower coulter (25), the link (9) being directed backwards in the direction of rotation of the coulter (1), which facilitates its adjustment movements.

It is also preferred that the coulter comprises a hydraulic cylinder (20) (or could be another element such as a pneumatic actuator or a spring) that connects different parts of the articulated and parallel adjustable multi-coulter assembly (2). to vary their geometry and create the raising or lowering and pressure against the bottom of the discs to give them enough power to sow. Specifically, it is preferable that the cylinder (20) connects the upper coulters (21) and the main support (22) of the multi-coulter assembly (2), since in this concrete way the pressure exerted on the different positions is very stable .

For its part, it is preferred if the return element (91) comprises a spring (91a) guided by a concentric inner rod (91b). This makes it easy and cheap to add a spring (91a) preload regulator (91c) to the return element (91) to regulate and even remove the pressure of the cutting disc (8) against the ground if sowing without this device is desired.

Finally, it should be noted that the sowing disc (5) can have a tip (50) transverse to its axis and a rack (51) eccentric to this axis to adjust the sowing depth.

Having sufficiently described the nature of the invention and the manner in which it is carried out in practice, it should be understood that changes in detail in the arrangements above and shown in the accompanying drawings may be made provided the fundamental principle is not altered .

Claims (9)

Sowing coulters (1) for sowing machines, of a kind used for sowing machines, alone or in groups with a variable number of other similar sowing coulters (1) for sowing seed in the channels opened by each of these sowing coulters (1), on the sowing coulters (1) a seed supply tube (4), a mono or sowing disc (5) angled to the direction of advance, a front cover wheel (7) and a front cutting disc (8) are fitted; characterized in that it comprises: - a multi-coulter assembly (2) articulated and adaptable in a parallelogram, in which the seed supply tube (4), the sowing disc (5) and the cover wheel (7) are mounted; - A front rocker (9) connected by a joint (90) to a lower part of the multi-coulter assembly (2), at the free end of which the cutting disc (8) is fixed, and - a return element (91) which Linkage (9) and the multi coulter assembly (2) connects together. Sowing coulters (1) for seeder after claim 1 , the multi-coulter assembly (2) comprising an upper coulter (21) hinged to a main support (22a) provided with anchorages (22a) at its top for attachment to the seeder, a lower coulter (25), which is hinged to the rear end of the upper coulters (21) and one below this lower coulters (25) comprising angled, inseparable rear extension (25a) on which the seed supply tube (4), the sowing disc (5) and the cover wheel (7) are mounted; and a coulter (23) closing the articulated coulter (2) and articulated to a front extension (22b) of the main beam (22) and the lower coulter (25). Sowing coulters (1) for seeder after claim 2 , wherein the joint (90) is arranged in the front part of the lower coulters (25), the rocker (9) being directed backwards in the direction of rotation of the coulters (1). Sowing coulters (1) for seeder after claim 2 or 3 , comprising a hydraulic cylinder (20) connecting different parts of the multi-coulter assembly (2) to vary their geometry. Sowing coulters (1) for seeder after claim 4 in relation to one of claims 2 or 3 , wherein the cylinder (20) connects the upper coulters (21) and the main beam (22) of the multi-coulter assembly (2). Sowing machine coulters (1) according to any one of the preceding claims, in which the return element (91) comprises a spring (91a) guided by a concentric internal rod (91b). Sowing coulters (1) for seeder after claim 6 , the return element (91) comprising a preload regulator (91c) of the spring (91a). Sowing coulters (1) for seed drill according to one of the preceding claims, wherein the sowing disc (5) comprises a point (50) running transversely to its axis and an eccentric rack (51) relative to this axis. Sowing coulters (1) for seed drills according to one of claims 2 until 8th , comprising a grain impeller (6) mounted on the lower coulter (25).

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