Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
  • A01B15/00—Elements, tools, or details of ploughs
  • A01B15/14—Frames
  • A01B15/145—Frames the plough blades being connected to the plough beam for unisono adjustment of the furrow width

Definitions

• the present invention relates to a mounted reversible plow of the variable working width type, provided with a device for refocusing the frame to facilitate the turning operation.
• refocusing the frame for the turning operation may cause the offset and / or the working width to be adjusted per body.
• the present invention provides an improvement which makes it possible to avoid, during the refocusing and turning operation, any modification of the offset and / or working width settings. This advantage also results in a reduction in the wear of the mechanisms and in particular of all the axes which make it possible to orient the plowing bodies and to maintain this orientation with respect to the frame which carries said bodies.
• the plow consists of a frame provided with plowing bodies which are each articulated around an axis positioned vertically when the plow is in the normal working position, and which are connected together by a linkage which maintains parallel to each other, which frame is connected to the coupling and turning head by means of a drawbar, by means of a frame axis and a head axis each located at the 'one of the ends of said drawbar, which axes are mutually parallel and vertical when ia plow is in normal working position.
• the drawbar is arranged near the axis longitudinal traction and constitutes the first side of the offset parallelogram which also comprises - a second side consisting of the transverse beam which is provided with the head axis of the drawbar, - a third side parallel to said drawbar, also articulated on said beam , and - a fourth side consisting of a crosspiece parallel to said beam.
• the fourth side of the offset parallelogram serves as a starting point for another parallelogram, also deformable under the effect of a jack which makes it possible to adjust the slope and the working width between the bodies by tilting the frame relative to the longitudinal axis traction.
• the offset parallelogram comprises, on its side parallel to the drawbar, a centering cylinder which is articulated on the support arm and which makes it possible to tilt said drawbar and any plow around the head axis.
• the offset parallelogram comprises, between the sides adjacent to the drawbar, an intermediate cross member articulated substantially at mid-length of said drawbar, which cross member divides said parallelogram into two parallelograms: - a first parallelogram between the transverse beam and said intermediate cross member and
• the first parallelogram comprises, arranged parallel to the drawbar, a side consisting of the refocusing cylinder which makes it possible to tilt the whole of the frame carried by said drawbar, relative to the head axis, in order to carry out a refocusing of said built on the turning axis without modifying the working width and offset settings.
• the invention also relates to particular means associated with the offset parallelogram, which make it possible to carry out an automatic correction of the distance of the first body relative to the wheel of the tractor which rolls in the furrow, as the working width of the plow bodies changes.
• the actuating cylinder of the offset parallelogram is articulated at one of its ends on the intermediate cross member by means of an axis located along the length of said intermediate cross member, and at its other end by means of d 'an axis mounted on a leg integral with the frame, the two axes of said actuating cylinder form with the axis of the frame, the vertices of a triangle whose side which corresponds to the leg of the frame has a fixed length, whose side constituted by the offset cylinder has a fixed or adjustable length as the case may be, and the third side of which has a variable length either under the effect of said offset cylinder, or under the effect of the tilt or width adjustment cylinder of work, which causes, simultaneously and advantageously, the offset correction.
• the actuator for adjusting the working width is interposed between an axis mounted on a yoke fixed to the frame and an axis mounted on the central cross member opposite the axis of the frame.
• FIG. 1 represents, in the form of a simplified functional diagram, a reversible plow of the type with variable working width, before refocusing its frame;
• the plow shown diagrammatically in Figures 1 and 2 includes a coupling head 1 associated with the lifting arms of a tractor not shown.
• This head is provided with an axis 2 on which a transverse beam 3 is articulated.
• This beam 3 is manipulated by conventional turning means, not shown, which make it possible to make a U-turn around the axis 2.
• the frame 4 of the plow is connected to the beam 3 by means of a drawbar 5.
• This drawbar is articulated on the beam 3 by means of a head axis T arranged near the turning axis 2.
• the frame 4 is articulated on the drawbar 5 around a frame axis B located at the other end of said drawbar.
• the drawbar 5 carries the frame 4 and the various plowing bodies 6 mounted on said frame 4.
• This type of reversible plow carried may include for example five or six plowing bodies.
• Each plowing body 6 is articulated on the frame 4 by means of a body axis C, C1.
• These axes C, C1 ..., make it possible to modify the difference Z between two bodies, that is to say the working width by adjusting the inclination V of the frame 4 relative to the longitudinal axis 7
• the bodies remain parallel to each other by means of a rod 8 which interconnects the cranks 9 used to operate said bodies.
• these bodies 6 are connected to the transverse beam 3 of the coupling head, by means of parallelograms: - a first parallelogram defined by the axes A, B, T, E, corresponds to the offset parallelogram, - a second parallelogram defined by the axes A, B, C, D corresponds to the superelevation parallelogram or for adjusting the working width, and - parallelograms defined by the frame 4, the rod 8 and the crank 9.
• the parallelogram ABCD is materialized, for its first side BC, by a portion of the frame 4.
• the second side CD consists of a crank 92 which is integral with the age 13 of the second body 62.
• the third side AD consists of a connecting rod 11 which can be of adjustable length.
• the CD side materialized by the crank 92 is parallel to the fourth side AB of the working width adjustment parallelogram.
• the AB side is materialized by a cross member 16, common to the offset parallelogram and to the tilt adjustment parallelogram.
• This cross 16 is parallel to the transverse beam 3 which constitutes the second TE side of the offset parallelogram.
• the other two sides of this offset parallelogram consist of the drawbar 5 which forms the first side, and by a juxtaposition of two elements constituted for one of a jack 17 and for the other of a connecting rod 18 positioned in the alignment of the jack 17 which together form the third side.
• This jack 17 and the connecting rod 18 constitute the side AE of the offset parallelogram. Maintaining the alignment of the jack 17 and the connecting rod 18, which are connected together by an axis F, is effected by means of an intermediate crosspiece 19 which is articulated on said axis F and, on the drawbar 5, by means of an axis G.
• the ABTE offset parallelogram comprises two parallelograms: the ABGF parallelogram consisting of the cross member 16, of a portion corresponding for example to half of the drawbar 5, of an intermediate cross member 19 parallel to the cross member 16 and a connecting rod 18 parallel to the drawbar 5.
• the second parallelogram EFGT consists of the jack 17 which is parallel to the drawbar 5, of the intermediate cross member 19, of the other portion of the drawbar 5 and of the beam 3.
• the ABTE parallelogram makes it possible, depending on the type of tractor used to pull the plow and in particular depending on the track of the tractor, to adjust the distance X of the first body 61 relative to the wheel 20 of the tractor which rolls in the line.
• This wheel 20 is located at a distance Y from the turning axis 2, that is to say at a distance which is equal to half of the track of the tractor.
• the offset is adjusted by means of a jack 21 which modifies the geometry of the ABTE offset parallelogram.
• This cylinder 21 is interposed between the intermediate cross member 19 and an arm 22 secured to the frame 4.
• the jack 21 is mounted on an axis 23 and it is mounted on an axis 24 at its other end, integral with the arm 22.
• the axis 23 is located along the length of the intermediate crosspiece 19.
• the axis 24 is located at a distance from the axis B which is greater than or equal to that which separates the axis 23 from the axis G.
• the working width Z that is to say the space between two bodies 6, is adjusted by adjusting the angle V made by the frame 4 with the longitudinal axis of traction 7.
• This adjustment of the angle of the frame 4 is effected by means of a jack 25 interposed for example between a yoke 26 disposed on said frame 4 and for example, a tab 27 arranged at the end of the central crosspiece 16.
• the jack 25 can also be mounted on the axis A and the axis 28 of the yoke 26.
• the actuation of the jack 25 causes a deformation of the offset parallelogram by means of the arm 22 and of the jack 21.
• the deformation of the triangle B, 23, 24 allows, as and when the working width is modified Z between the bodies 6, correct in the same direction the distance X between the first body 61 and the wheel 20 of the tractor which is positioned in the previous groove.
• FIG. 2 represents the position of the frame 4 and the drawbar 5 after pivoting about the axis T, under the effect of the jack 17.
• the jacks 21 and 25 remain blocked and they keep the geometry of the different parallelograms. This avoids operating the different axes of the mechanism for adjusting the working width and the offset.
• This jack 17 simply has the function of varying the angle between the transverse beam 3 and the drawbar 5 to facilitate the turning operation of the frame of the plow.
• FIG. 3 represents an alternative embodiment also presented in the form of a functional diagram.
• the frame 4 is carried by the drawbar 5, which drawbar 5 is articulated on the beam 3 around d 'a head axis T and on the frame around a frame axis B.
• the frame 4 comprises the bodies 6 which are connected together by a rod 8 and the cranks 9.
• the bodies 6 are kept aligned with respect to the longitudinal axis 7 by means of the parallelograms ABCD and ABTE, and the parallelograms of the bodies' connection to each other.
• the ABTE parallelogram or offset parallelogram includes the drawbar 5, ia beam 3, a jack 17 'parallel to the drawbar 5 which extends between the axes E and A and a cross member AB detailed below.
• the parallelogram ABCD comprises the cross-member AB, detailed below, a portion of frame between B and C, a crank 92 between C and D, and a connecting rod 11 between A and B, which connecting rod can be adjustable, consisting of a turnbuckle.
• the superelevation parallelogram ABCD deforms mainly under the effect of the actuator 25, which actuator varies the angle V between the frame and the longitudinal axis 7.
• the offset parallelogram ABTE is deformable under the effect of a jack 21. This jack 21 is interposed between the drawbar 5 and in particular the axis G 'and the cross member AB.
• the cross member AB which is common to the offset parallelogram and to the superelevation parallelogram, consists of an arm 22 secured to the frame 4, which extends between A and B.
• This cross member AB is completed by a lever in the form of an organ rocker 30 which is articulated between its two ends, at an axis 31 located at the end of the arm 22.
• This rocker extends on one side between axis 31 and axis A and on the other side between the axis 31 and an axis 32 associated with the end of the jack 21. In the middle position, the axes 31 and 32 are substantially on the line AB.
• the ratio between the branch 33 of the rocker 30, located between the axis 31 and the axis A, and the branch 34 located between the axis 31 and the axis 32, is of the order of 2.
• the axis 31 is located at a distance of B which is of the order of 2/3 of the distance AB.
• the axis G ' is located along the length of the drawbar 5, substantially halfway between the axes B and T, offset towards the inside of the ABTE parallelogram, at a distance from the straight line BT which is of the order of the TE distance VA.
• the axes A, G ', 32 form a triangle whose side formed by the rocker 30 has a fixed length.
• the side formed by the jack 21 has a length which varies according to the adjustment of the offset and the side G'A has a length which varies under the effect of the jack 21 or under the effect of the jack 25 which is used for adjusting the working width.
• an action of the jack 25 to modify the working width of the plow has an effect on the offset by varying the distance G'A.
• an action on the jack 25 to increase the working width that is to say increase the angle V of the frame 4 relative to the axis 7, will modify the distance G'A in the direction d 'An increase which will have the effect of removing the plow from the wall 35 and especially to establish an offset, that is to say a distance X which corresponds substantially to the width Z between two consecutive bodies.
• the side AE of the ABCE parallelogram comprises a jack 17 ′.
• This actuator when actuated, rotates the entire plow around the axis T allowing the center of gravity of said plow to be moved to approach it from the longitudinal axis 7.
• This action on the actuator 17 ' has no effect on the adjustment of the working width and on the adjustment of the offset.
• the jack 21 which is used to adjust the offset can be replaced by a turnbuckle.

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• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Soil Sciences (AREA)
• Environmental Sciences (AREA)
• Soil Working Implements (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9484030

Family Applications (1)

Country Status (10)

Cited By (1)

Families Citing this family (3)

Family Cites Families (7)

• 1995
  • 1995-10-25 FR FR9512760A patent/FR2740293B1/fr not_active Expired - Fee Related
• 1996
  • 1996-10-25 EP EP96934981A patent/EP0857014A1/de not_active Withdrawn
  • 1996-10-25 RO RO98-00896A patent/RO117059B1/ro unknown
  • 1996-10-25 PL PL96326363A patent/PL326363A1/xx unknown
  • 1996-10-25 CZ CZ981268A patent/CZ126898A3/cs unknown
  • 1996-10-25 HU HU9900005A patent/HUP9900005A2/hu unknown
  • 1996-10-25 BR BR9611246-8A patent/BR9611246A/pt not_active Application Discontinuation
  • 1996-10-25 AU AU73089/96A patent/AU7308996A/en not_active Abandoned
  • 1996-10-25 WO PCT/FR1996/001681 patent/WO1997015177A1/fr not_active Application Discontinuation
• 1998
  • 1998-04-24 BG BG102406A patent/BG102406A/xx unknown

Non-Patent Citations (1)

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