EP0389591A1

EP0389591A1 - Plough with symmetrical body

Info

Publication number: EP0389591A1
Application number: EP19890909779
Authority: EP
Inventors: Denis Coste
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-26
Filing date: 1989-08-22
Publication date: 1990-10-03
Also published as: WO1990001863A1; AU4203089A

Abstract

Charrue à corps à versoir et à soc à largeur de travail par corps variable comportant un bâti/tête (5) muni d'un axe (6) et d'un système de guidage (7), une poutre (13) qui supporte, espacés régulièrement le long d'elle des porte-corps (19) et des rasettes (36), et qui est reliée à (7) par un axe/galet (20) se déplaçant le long du guide, un bras articulé (11) prenant appui à une extrémité sur (6) et recevant à l'autre la poutre (13) par l'intermédiaire de l'axe (12), un bras (27), pouvant être remplacé par un vérin articulé sur la tête et qui assure par l'intermédiaire de tringlerie et pivots de déplacement des différents organes.Plow with molded body and plow share with variable working width comprising a frame / head (5) provided with a pin (6) and a guide system (7), a beam (13) which supports, regularly spaced along it body holders (19) and skimmers (36), and which is connected to (7) by an axis / roller (20) moving along the guide, an articulated arm (11) bearing at one end on (6) and receiving at the other the beam (13) via the axis (12), an arm (27), which can be replaced by a jack articulated on the head and which ensures by means of linkage and pivots of displacement of the various organs.

Description

BODY PLOWS. SYMMETRICAL

The present invention relates to a plow with symmetrical bodies of hollow form mounted on a beam articulated to a pivoting frame making it possible to pass from one working direction to the other, with variable working width and angle intended to be connected to a tractor. fitted with a towed implement hitch or with a two- or three-point system for semi-mounted or mounted implement.

In the context of patent No. 86/11621, it is known that an intermediate frame * pivoting on an axis belonging to the head, has a pivot axis which receives the body-carrying beam, itself pivoting by being guided by the head. According to the same patent, it is known that the bodies pivot relative to the beam and can cause the pivoting of the parts or ends of moldboards.

It is known the plow having a single plow body for the two directions of work pivoting under a beam itself pivoting about an axis secured to a frame.

All the known systems of plow with symmetrical bodies with variable width have the disadvantage that, when the tractor rolls in the line, the width with the first body, so that it does not decrease by the angulation of the beam, must be obtained by a complete offset of the plow which slides on the coupling shaft attached to the tractor. In this case, the third point is no longer in the vertical axial plane of the tractor and the good line resistance of the plow is compromised.

It is known the reversible plow for both directions of plowing, with variable width. The principle includes a double system: an offset of the intermediate part, support of the rear part, itself support of the bodies with respect to the front part, the head, plus a complex system of support arms of the beam articulated on it and on said head taking the appearance of various deformable geometric figures to move the beam in the position of z variable width, all doubled with references, connecting rods allowing at the same time the displacement parallel to themselves of the plowing bodies. The first system corrects the differences in distance between the tire rolling in the line and the longitudinal axis of the head, taking into account the plowing depth. The second system performs the variable work of each body.

It is known a unique symmetrical razor system for both directions of work, but its fixing to date has not allowed it to be positioned correctly with respect to the body in the different angle positions or away from the previous body, without using more than one pivot axis. In addition, the shape of the razor must take into account that of the moldboard to position the top layer to be buried in the right place.

Finally, in the case of the symmetrical body with a hollow moldboard, its more vertical position than the conventional bodies leads to a discontinuity between said moldboard and the ploughshare, which is the source of two earth flow currents causing in some soils or fine earth and sticking to the moldboard source of excess power and poor plowing.

The present invention proposes to offer possibilities responding to the shortcomings or disadvantages listed above and to offer solutions, either more effective or less costly, by adapting:

1 - on the front part pivoting on the coupling shaft a vertical pivot located in the longitudinal vertical plane of symmetry,

2 - a stem arm having a vertical axis at each end, the front one taking place in the vertical pivot specified above, the rear one receiving the body-carrying beam,

3 - a particular system for guiding the beam making it possible to change its angle for allow the variation of the working width of each body,

4 - a possibility of obtaining the same beam angle position for the same working width per body, at plowing depths, tire widths for different working tracks,

5 - a share shape in good position and shape with respect to the position of the moldboard,

6 - a razor shape adapted to the shape of the moldboard.

All the points also relate to the simple classic plows, known as “with plank” for plowing in only one direction of work, and the reversible plows for “plowing flat” in the two directions of work.

The various parts of the invention will be better understood on reading the following descriptions and on examining the appended drawings which show, by way of nonlimiting examples, some embodiments of the various elements within the scope of the invention.

In these drawings:

- Figure 1 shows a top view of the entire plow showing all the elements of the invention;

- Figure 2 shows a front view of the front part of the plow, and more particularly the guide and orientation slide of the beam;

- Figure 3 shows a vertical longitudinal axial section of the plow, the beam being placed in the longitudinal axial transport position;

- Figure 4 shows a schematic embodiment of the invention suitable for conventional reversible and simple plows.

The invention consists of a body-supporting beam supported at one of its points by an arm articulated at one of its ends on said beam and at the other end on the head connected to the coupling shaft, the beam present, at another elongated point in the form of a light, for example towards its front, a roller displaceable in said light in order to vary the distance of the two points, which roller rolls in one or two half-slides / guides depending on whether the plow is provided with conventional bodies, right or right and left, or symmetrical bodies, which half-slide (s) fixed (s) ^• on the head on one side or on each side of the axial plane thereof according to one either of the above body equipment cases, can or can pivot in a light arranged in the head, an articulated arm bearing on an axis of said head and on the beam driving through a cylinder the beam in its displacement.

The invention also consists in the shape of the ploughshare of the plow body -36, curved cast iron, and in a skimmer 35, having a hollow concave moldboard on the side working along the two horizontal and vertical planes, and a trapezoidal ploughshare, see isosceles triangle, equal sides facing down.

The assembly, constituted by FIGS. 1 to 3, comprises a coupling shaft (1) having the pins (2) intended to be connected to the coupling arms of the tractor, a pivot (3) on which is articulated by through the hydraulic cylinder (4), a front element, the head (5), in which is fitted a pivot (6) and two half-slides connected together in the center by a vertical axis allowing their articulation in a plane " horizontal with respect to the head frame guided by a light (34) at each lateral end of the head (5). Stops (9) and (10) make it possible to limit the travel of the roller (20) placed rigidly at the front of the beam or connected to it via a support arm (23). The bracket (11) is articulated at the front at (6) and at the rear on the axis (12 ) common with the beam (13), the latter having along it axes (14) ^" on which the ages (15) are integral at their lower ends and arms (26) at their upper ends connected by a connection - longitudinal (17). Each age (15) receives a razor pin (18) and a pivot (19) receiving the body holder (21), razor and body holder being connected by the connection (22).

On the front end of the beam or of the first age (15) integral with the axis (14) is fixed a support (23) provided with a light (24) in which can slide the support axis of the roller (20 ). Two stops (25) and (16) belonging to the beam (13) limit the angular travel of the beam on the axes (14). The beam is moved by an arm (27), actuated by the jack (28), pivoting around the axis (32) belonging to the head (5) and bearing on a roller (29) belonging to a point of (13) located from (12) to

(20) on the beam. The hydraulic cylinder (28) can also be put in place of the arm (27).

In (31), on each side of the beam (13), at the front of each pivot (14) is fixed a cable (30), the rear end of which is connected to the pivoting control arm of the skimmer (36 ). The latter has a concave shape. The pivot (6) of the head is vertical and positioned in the case of the plow with a symmetrical body in the vertical plane of symmetry of the head, whereas it can be outside this plane in the case of plows having bodies specific for each direction of plowing. The pivot (6) can be extended beyond the height of the bracket (11), or else in the second axis located in the axial extension of the first, to receive a drawing arm (39) increasing the rigidity of * said bracket. The stem arm (11) has the ability to oscillate on either side of the vertical axial plane of the head (5) according to the angle granted to it by the hydraulic cylinder actuating all of the pivotings.

The assembly constituted by the two half-guides

(7) of the roller (20) in the general shape of a buttock positioned in the direction of advance along the longitudinal axis of the head (5). According to the invention, each half-guide comprises a first section closer to

REPLACEMENT SHEET the outside, directed more and more forward when approaching the outer end, and a second section which is also oriented forwards by advancing along it inwards in the direction of the longitudinal axis. The two half-guides meet more or less close to the longitudinal axis. Thus according to the invention for a fixed position, the beam (13) corresponding to an average position of the roller (20) on the first section, the distances between the articulated apex (12), the angle formed by (11) and (13), and the points of the guide located more and more towards the outside, plowing side are increasing and those of the first section located more and more towards the inside on the lookout side, are decreasing. Similarly, according to the invention, in the first part of the second section following the internal part of the first, the distances er.tre the pivot axis (12) and said section are increasing by moving towards the axial plane of the head.

When the beam (13) coincides with the bracket (II) in the axial plane of symmetry, the distance between the axis (12) and the half-guide of the second section is at most equal to the distance between the two axes of the beam and that of the roller (20).

The shape of each right and left part of the guide rail can cover regular shapes varying from the straight line to a portion of circumference in the context of the invention, pivoting bracket / body beam / slide, covering the largest variable width range, without having to use an additional adjustment to correct the irregularity obtained between the width at the first body and that obtained between the following bodies.

In the context of the invention, the roller (20) can by a light slide in its support in order to vary the angle of the beam by lengthening it between its two support axes (20) and (12 ). This angle change can also be done by advancing and retreating each outer right and left end of the slide in a slot (34) belonging to the head (5), these two ends pivoting about an axis common to the center (38). One or the other of these settings makes it possible to vary the working width corresponding to that of the first body when varies the depth of plowing, or lateral distance from the first body to the pι ^* eumatique rolling in the stripe. The share of the body 35 has a domed shape in vertical section.

The operation of the assembly is as follows:

When the plow finishes its furrow and that before engaging in the opposite direction, in the furrow previously carried out, the hydraulic jack represented by (28) actuates the pivoting of the beam (13) autgur of the axis (12) , a number of organ movements are performed. The front of the beam rolls the roller (20) on the ramp, directing it towards the center C of the head, its axis (12) pivoting the stem arm (11) around its front axis (6), constrained in this by the shape of the fixed guide (7) of which all the support points with the roller, when moving thereof are, except those close to the center C, at a different distance from the pivot (12). In its movement, the bringing together of the two perpendicular to the longitudinal axis of advancement of the plow, lowered from the axes of the roller (20) and from (12), causes the inclination of the beam, therefore increasing the width of job. The angle of approximation of the two half-guide (7) and pivot (12) curves is that an increase in the width of the first body corresponds to the same increase in the second.

When the front of the beam approaches the central zone C of the head and the roller has left the zone of variable width, the ramp of the guide increases to force the pivoting of the members of the beam as well as of said beam until to the opposite stop (9) of the guide.

If the plowing depth changes, more important for example by wanting however to maintain the working width by body, so by maintaining the beam angle, the first body must go inward, the ï tractor tilting further, the tire rolling in the line then approaches the first body, that is to say the longitudinal axis. By moving the beam inwards it tilts due to the shape of the guide (7) which causes an increase in working width per body. To bring back the initial inclination of the beam it is necessary to act on one of the four adjustments which can have been adopted:

- rotate the half-guides around (38) through the lights (34);

- slide the roller (20) in its lumen (24) by shortening the distance (12, 20)

- Move the axis (12) of the arm (11) in a light then fitted in the beam;

- move the pivot (6) backwards along the longitudinal axis in a light then fitted in the head.

The last two settings were not retained at the drawing level.

The invention is intended for conventional reversible and simple cnarrues by adopting the triangular mounting bracket / beam / adjustable guide half-slide.

Claims

REYENPICftTIPNS

1 - Plow with body 35 with moldboard and plow with working width by variable body comprising a frame / head (5) provided with a pin (6) and a guide system (7), a beam (13) which supports, regularly spaced along it body holders (19) and skimmers (36), and which is connected to (7) by an axis / roller (20) moving along the guide, an articulated arm (11) takes support at one end on (6) and receives at the other the beam (13) via the axis (12), an arm (27), which can be replaced by a jack articulated on the head and which ensures by means of linkage and pivots for movement of the various organs, characterized in that: a) the position of the first side (12, 20), which represents the beam (13), at an angle, articulated at its top (12) and pivoting around a point (6) on the second side (12,6) varies angularly by moving by the mobility of a point on said first side along the guide / slide (7), at least part, the one used in. ur the working position of the bodies, at its different points at a distance from the top (12) for a given position of the beam in the working position of the bodies, in order to vary the working width, the other part that in the direction from the longitudinal axial plane of the head also having different distances from the top (12) in order to pass the beam (13), in longitudinal axial position and from one working direction to the other. b) one of the following or combined possibilities exists: move the axis (6) along the longitudinal axis, vary the length of the side (6, 12) or the other side (12, 20) of the vertex angle (6, 12, 20)

(12 *) -, so that in any position of the roller axis (20) of the beam on the slide / guide (7), the angle of said beam can be modified to adopt the desired working width taking account of the plowing depth and the distance of the tire in the line to the axis of the head. 2 - Plow more particularly characterized according to claim 1, in that for a given position of the roller axis (20) of the beam at a midpoint of the part of the slide guide (7) used to vary the width working distance, the distances between the articulated top (12) and the points of the guide located more and more outwards, plowing side, ^' are increasing and those located more and more inwards, side guet, are going decreasing, in order to obtain that between two positions of the beam on this section of variable width, the variation in width worked, between two bodies which follow each other is equal to the variation in the first body most forward on the beam.

3 - Plow more particularly characterized according to claim 1, in that the distances from the pivot

(12) of the beam at each point of the inner section of the guide / slide used to bring the beam to the axial position and pass in the other working direction, increasing at the start of said inner section to be at least equal in the vicinity from the longitudinal axial plane of the head when the beam (13) and the bracket (11) pass through this plane.

4 - Plow more particularly characterized according to claim 1 in that the dεmi- guides / slides (7) right and left have the possibility of pivoting at one of their ends in a lumen (34) of the head in order to vary the angle of the beam to adopt different working widths and to take into account the position of the first body relative to the tire rolling in the line.

5 - Plow according to claim 1, characterized in that u arm (27) has one of its end articulated on the head, and at the other end provided with a lumiere ^ which drives the beam in its pivoting. 6 - Plow according to claim 1, characterized in that the moldboard of the skimmer (36) λk has a hollow concave shape, on the side of the working face, along the two vertical and horizontal planes

7 - Plow according to claim 1, characterized in that the share of the skimmer (36) has the shape of an isosceles triangle, the point directed towards the ground, or of an isosceles trapezium

8 - Plow according to claim 1 characterized in that the share of the body 35 has a convex shape following a vertical section.

9 - Plow according to claims 1 to 8, charac terized in that it is designed so that said revendica¬ tions apply to all plows with body, back and plowshare: symmetrical single body plows, ch streets reversible with right and left body for both directions of work, simple plows with body for a single direction of work with only one half-slide being used.