• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an agricultural machine which has two sections (11, 12) articulated with respect to one another, at least one oblong hole (17) being formed in one of the two sections, the machine comprising a device connecting member (13) having an actuator (15) configured to pivot one section relative to the other, and a stroke limiter (18), the actuator carrying a movable pivot pin (21) having a longitudinal axis transverse to the oblong hole, the movable pivot rod being arranged to slide in the length of the oblong hole, the stroke limiter admits a blocking state in which it obstructs the oblong hole, thus limiting the sliding of the pivot rod in the oblong hole , the stroke limiter being able to reach the blocking state from a free state in which it is rotatably mounted relative to the oblong hole.
    公开号:FR3055082A1
    申请号:FR1657831
    申请日:2016-08-19
    公开日:2018-02-23
    发明作者:Pascal ANTONI；Ludovic LESIEUR；Michel SEEMANN
    申请人:Kuhn SAS；
    IPC主号:
    专利说明:

    Description
    The present invention relates to the general technical field of agricultural machinery and, inter alia, to machines comprising a folding frame having a central section and at least one lateral section on each side of the central section. In one particular case, the agricultural machine is a seed bar. It can also be a soil working machine such as a cultivator or a harrow, a fodder treatment machine such as a girder, or more generally an agricultural machine with a folding frame requiring a field monitoring by the lateral sections.
    In a type of machine comprising a first section on which a second folding section is mounted via an articulation, a jack is mounted at one end on the first section and carries at the end of its retractable rod a transverse pivot rod. This pivot rod is slidably mounted in an oblong hole in the second section. When the second section is folded, when the oblong hole is 90 degrees from the axis of the movable rod and the center of gravity of the foldable section has crossed the vertical plane passing through the joint, the foldable section descends by gravity to the first section. The pivot rod then slides into the oblong hole and away from the end of the oblong hole. As a result, the foldable section does not adopt the desired position for transport. In addition, during the unfolding of the machine, when the center of gravity of the second section crosses the vertical plane passing through the articulation between the sections, the second section descends by gravity. If the pivot rod is not at the intended end of the oblong hole, the second section will drop until the pivot rod comes to a stop and the cylinder can hold the section. This fall risks damaging the cylinder, the hydraulic circuit, or even the chassis if the cylinder fails under the weight of the second section.
    Furthermore, depending on the weight, the physiognomy and the number of tools, the position of the center of gravity of the folding sections differs. Each weight and configuration of tools corresponds to a different center of gravity and an optimal inclination of the oblong hole (for example with respect to the horizontal). Also, the inclination of the oblong hole is a difficult compromise to ensure a tilting of the folding section suitable for all the configurations of tools provided.
    The invention aims to limit the sliding of the pivot rod carried by the actuator in the oblong hole in a position where the actuator rod is 90 degrees by a versatile structure, simple to implement, easy to assemble and economic. It is also desirable that the side sections can provide ground monitoring when they are in the working position.
    The invention thus relates to an agricultural machine with two sections articulated with respect to each other, at least one oblong hole being formed in one of the two sections, the machine comprising a connection device having an actuator configured for rotate one section relative to the other, and a stroke limiter, the actuator carrying a movable pivot rod, of longitudinal axis transverse to the oblong hole, the movable pivot rod being arranged to slide in the length of the hole oblong. The invention is remarkable in that the stroke limiter admits a blocking state in which it obstructs the oblong hole, thereby limiting the sliding of the pivot rod in the oblong hole, the stroke limiter being able to reach the blocking state from a free state in which it is mounted movable in rotation relative to the oblong hole.
    The agricultural machine thus has a device for limiting the stroke of the pivot rod in the oblong hole with an economical structure to implement and simple in its operation, requiring no manual intervention by the operator.
    In addition, the presence of the limiter makes it possible to standardize the design of the machines since, in the absence of the pivot rod being raised in the oblong hole, there is no longer any need to design different machines for different configurations of tools. Also, the limiter can be implemented on a large range of oblong hole inclinations.
    Advantageously, in the free state, the stroke limiter can be mobile in rotation under the effect of its own weight during the rotation of one of the two sections relative to the other section.
    This characteristic makes it possible to link the movement of the stroke limiter to the rotation of the rotating section. It does not require the presence of a spring to set up. The stroke limiter is therefore particularly simple and economical in design and use.
    Preferably, the direction of rotation of the travel limiter is opposite to the direction of rotation of the section carrying the oblong hole.
    This characteristic allows a progressive and smooth automatic positioning of the stroke limiter, unlike a limiter adopting the same direction of rotation as the folded section and which would switch suddenly at the passage of the vertical plane by its center of gravity.
    Advantageously, the blocking state is reached during the folding of one of the two sections relative to the other by means of the actuator, and before a retractable rod of the actuator is found at 90 degrees from a longitudinal axis Al of the oblong hole.
    Advantageously, the stroke limiter has a spout, a neck and a rim, the neck being a recess formed between the spout and the rim.
    This structure having a recess makes it possible to wrap the pivot rod at the end of the oblong hole when folded back or when the machine starts working. Thus, the stroke limiter is prevented from disengaging during everyday use.
    In a particularly advantageous embodiment, the stroke limiter is defined by lengths Dl to D4 relative to a pivot axis around which the limiter is pivotally mounted, Dl being the distance between the pivot axis and the point of the spout. further from the pivot axis, D2 being the distance between the pivot axis and the point of the neck closest to the pivot axis, D3 being the distance between the pivot axis and the point of the flange further from the pivot axis, D4 being the maximum distance between the pivot axis and the point closest to the pivot rod when the latter is in the extreme position, abutting against an end surface of the hole oblong opposite to the pivot axis, D3 being greater than D4, itself greater than Dl, itself greater than or equal to D2.
    These distances ensure the correct positioning of the stroke limiter in a blocking position for the pivot rod: relative movement of the pivot rod to the neck where it is wrapped, abutment of the flange against the rod pivot and holding the pivot rod in the neck while working the machine.
    Advantageously, the stroke limiter admits a blocked state in which the limiter is immobilized by a blocker in the position reached in the blocking state in which it obstructs the oblong hole and limits the sliding of the pivot rod in the oblong hole.
    This structure allows control of the working height and / or depth by preventing inadvertent folding of the sections.
    Advantageously in the locked state, the stroke limiter can also be a vector of thrust from one of the sections to the other of the sections via the actuator, that is to say have the role of an intermediate member and of thrust transfer.
    This further improves control of the working height and / or depth.
    Advantageously, in the blocked state, the stroke blocker has:
    - an opening in the travel limiter opposite the oblong hole;
    - an additional fastening element housed in the opening and in the section on which the oblong hole is provided, for example a rod, itself fixed by a pin.
    In a particular embodiment, a first section is a central section of the machine, while the second section is a foldable side section above the first section.
    Other characteristics and advantages of the invention will emerge from the description which follows with reference to the appended drawings which are given only by way of nonlimiting examples of the invention. In these drawings:
    - Figure 1 is an elevational view of a junction between two sections of a folding frame of an agricultural machine in a working position;
    - Figure 2 is an elevational view of the elements of Figure 1 in an intermediate position, during the folding of one of the sections from a working position to a transport position, or during the unfolding from a transportation;
    - Figure 3 is an elevational view of the elements of Figure 1 in the transport position;
    - Figure 4 is an elevational view of an alternative use of the junction in the working position; and,
    - Figure 5 is a detailed view of a visible mass for example in Figure 1.
    FIG. 1 represents the junction between two sections 11 and 12 of the folding frame of an agricultural machine 10. Here, the sections 11 and 12 are generally oriented laterally in a direction A transverse to a general direction of advance of the machine 10.
    In the example shown in Figures 1 to 4, the machine 10 is a seed bar, section 11 is a central section of the frame and section 12 a side section. The section 11 then remains horizontal with respect to the ground and the section 12 is foldable vertically or beyond the vertical with respect to the section 11. A similar junction not shown is provided by symmetry, on the other side of the central section 11 with a second lateral section.
    The sections 11 and 12 each comprise one or more beams 110 or 120. The illustrated arrangement of the beams 110 and 120 is not limiting, these can be arranged at different heights and / or one behind the other in a planned direction advancement of the machine. The beams 110 or 120 of the same section 11 or 12 can carry wheels (not shown here) and one or more tools 100 which will be, without limitation, seeding elements, tedder rotors, cultivator coulters or harrow tips , portions of compacting rollers or other tools, possibly of several types in combination, depending on the type of machine which is then a seed drill, for example with discs or tines, a planter, a girofaneur, a cultivator, a harrow or any other suitable agricultural machine.
    The beams 110 or 120 of the same section 11 or 12 are preferably but not limited to one another, for example by welding, brazing, bolt assemblies, or any other suitable means or method, alone or in combination .
    Sections 11 and 12 are mounted one on top of the other by means of a joint
    16. More specifically, in the nonlimiting example shown, section 12 comprises a flange 14 connected to section 11 by the articulation 16. The flange 14 is for example carried by a lower beam 120.
    The flange 14 is also part of a connecting device 13 provided for folding the sections 11 and 12 relative to one another. The flange 14 has, here in its upper part, two end plates 140 parallel. An oblong hole 17 is formed in each plate 140, the holes 17 being of the same orientation and preferably of the same length.
    The connection device 13 also comprises an actuator 15 and at least one stroke limiter 18, called mass with reference to the example illustrated and described.
    The actuator 15 is here a double-acting hydraulic cylinder. The actuator 15 comprises a body 19 and a rod 20 sliding and retractable in the body 19. The end of the actuator 15 on the side of the body is mounted movable in rotation, by a pivot or a ball joint, on a support integral with section 11. The end of the rod opposite the body 19 has a transverse rod 21 called a pivot rod. The pivot rod 21 here extends transversely to the sliding rod 20, preferably parallel to the axis of the articulation 16. In the example shown, the rod 20 extends in the plane of the figures while the rod pivot 21 is transverse to the plane of the figures.
    The pivot rod 21 is slidably mounted in the length of the oblong holes 17 so as to allow relative movement of the rod 20 relative to the flange
    14. At least one of the oblong holes 17 has an end surface 22 forming a stop for the pivot rod 21, the surface 22 being disposed on the side of the actuator 15 in the working position (as visible in the figures 1 and 4).
    The actuator 15 is used to fold or deploy the folding section 12. During operation of the actuator 15, the pivot rod 21 slides in the oblong holes 17 until it abuts against the surface 22. A slight pivoting of the pivot rod is possible during sliding since the actuator 15 is mounted at a fixed point at its opposite end. Then, as the section 12 is folded around the articulation 16, the rod 21 pivots in the oblong holes 17. The connection between the rod 21 and the oblong holes 17 can therefore function as a pivot and / or as a slide . Details on the operation of the machine 10 will be given later in the text.
    The mass 18 is here a plate, preferably metallic, for example steel or another metal or alloy. In the example shown, the mass 18 has on its outline a spout 24, a neck 25 and a flange 26 (see in detail in FIG. 5). The periphery of the mass 18 here follows a continuous profile between the spout 24, the neck 25 and the rim 26. The spout 24 and the rim 26 form two projections on this profile while the neck 25 forms a recess between the spout 24 and the rim 26. Preferably, but not limited to, the spout 24 and the neck 25 each have a surface in portion of cylinder of revolution, respectively convex and concave. The neck 25 can then be in shape correspondence with the pivot rod 21. The contact zone is then surface rather than linear, which maximizes the longevity of the parts and the retention of the pivot rod 21 in the neck 25. Alternatively , the neck 25 may have a separate profile, for example square, rectangle or the like.
    An opening 27 is also formed in the mass 18. The opening 27 is for example opposite the spout 24 in a longitudinal direction of the part. The opening 27 is here a through opening, of circular section.
    The mass 18 is here pivotally mounted to the plate 14 by means of a rod 30. The rod 30 is housed in the opening 27. In addition, the rod 30 can be housed in a socket fixed in at least one hole oblong 17, or else housed in an orifice made directly in at least one plate 140. The rod 30 and the opening 27 extend along an axis 270 (FIGS. 2 and 5). The axis 270 forms a pivot axis and the mass 18 can rotate around the axis 270 during the folding and unfolding operations of section 12.
    The mass 18 also has a protuberance 29 forming a counterweight. The protuberance 29 is dimensioned and located as a function of the mass which it is desired to give to the mass 18 and of the desired position for the center of gravity G of 18. When the mass 18 pivots around the axis 270, the center of gravity remains in line with the axis 270 (FIGS. 1 and 2), until the spout 26 abuts against the pivot rod 21. The mass 18 therefore admits a free state in which it can pivot, before come into abutment against the rod 21, and a blocking state in which it abuts against the pivot rod 21 and for which more details will be given later. The transition between the free state and the blocking state is therefore made by the rotation of the mass 18 and by the coming into contact of the latter against the pivot rod 21.
    FIG. 5 illustrates an enlarged detail of the mass 18. FIG. 5 also shows the pivot rod 21 in its extreme position, against the surface 22.
    Different notable distances Dl, D2, D3 and D4 help to size the mass 18 and more generally the device 13. These distances Dl to D4 are defined relative to the axis 270 around which the mass 18 pivots.
    A first length D1 is the distance between the axis 270 and the point of the spout 24 furthest from the axis 270. The length D2 is the distance between the axis 270 and the point of the neck 25 closest to the axis 270. The length D3 is the distance between the axis 270 and the point of the flange 26 furthest from the axis 270. Finally, the length D4 is the maximum distance between the axis 270 and the point closest to the pivot rod 21 when the latter is in the extreme position, in abutment against the surface 22.
    The length D1 is less than the length D4 so that the spout 24 can cross the rod 21 during a rotation of the mass 18.
    The length D3 is greater than the length D4 so that the rim 26 cannot cross the rod 21, even when the rod 21 is in abutment against the surface 22. Preferably, the difference between D3 and D4 is greater than a third of the radius of the rod 21. More preferably, this difference is greater than the radius of the rod
    21.
    The length D2 is less than the length Dl so that the rod 21 can be easily accommodated and / or be held in the neck 25 when the rod slides in the oblong holes 17. Preferably, the difference between D2 and Dl is less than the radius of the rod 21. More preferably, this difference is less than half the radius of the rod 21. A significant difference between D1 and D2 makes it possible to guarantee that the rod 21 is held in the neck 25.
    In general, it is desirable that the dimensions D3, D4, Dl and D2 be decreasing in this order, that is to say that D3> D4> Dl> D2.
    An angle a is defined between the longitudinal axis Al of an oblong hole 17 and the longitudinal axis A2 of the actuator 15. The axes Al and A2 are considered in the plane of the figures which is perpendicular to the direction of advance of the machine 10. The angle a is located on the side of the actuator 15 opposite to the section to which it is rotatably mounted, here on the upper side (see FIGS. 1 to 3).
    In the working position illustrated in FIG. 1, the angle a is a flat angle (without limitation). The angle a can more generally be an obtuse angle, for example greater than 120 degrees, or even be an angle greater than 180 degrees. An angle a substantially flat, for example between 160 and 200 degrees, preferably 170 to 190 degrees, is to be preferred to limit the friction between the rod 21 and the edges of the oblong holes 17 on the one hand during monitoring of terrain and on the other hand when the actuator 15 is being retracted, before the rod 21 comes into abutment against the surface 22. In this position, the mass 18 is movable in rotation around the rod 30, and the section 12 is floating. Section 12 can provide ground tracking, that is, follow the evolution of the soil profile by rotating it in one direction or the other around the joint 16 as the machine advances.
    In the transport position illustrated in FIG. 3, the angle a is preferably an acute angle, preferably less than 80 degrees, insofar as the section 12 is folded beyond the vertical as illustrated in FIG. 3 More specifically, the section 12 is folded back beyond the vertical plane V above the central section
    11. In other words, section 12 has been folded over by 90 degrees from the working position illustrated in FIG. 1, which is horizontal in the example shown. The rim 26 is then in abutment against the pivot rod 21 of the end of the actuator 15, and the center of gravity G of the mass is no longer at the level of the axis 270 since the contact against the rod 21 opposes that the mass 18 does not rotate further.
    To fold section 12 above section 11 from the working position (Figure 1) to the transport position (Figure 3) via the intermediate position illustrated in Figure 2, the actuator 15 is retracted. The pivot rod 21 slides in the oblong holes 17 until it comes into abutment against the surface 22. Under the effect of the retraction of the actuator 15, the section 12 then lifts off the ground and pivots around the articulation 16. As soon as section 12 is lifted, the mass 18 pivots around the rod 30 under the effect of its own weight until the spout 24 crosses the pivot rod 21 and the rod 21 is found opposite of the neck 25. The rim 26 then abuts against the pivot rod 21 and the mass 18 is found held against the pivot rod 21 under the effect of its own weight. The actuator 15 continues its retraction effort and the section 12 continues to pivot around the articulation 16 to the transport position of the machine 10. In the example illustrated, without limitation, the rod 20 of the actuator 15 is fully retracted. Alternatively, it can only be partially retracted.
    Notably, in the absence of the limiter 18, when the angle has reached 90 degrees, the pivot rod 21 would tend to follow the edge of the oblong holes 17 on the side of the actuator 15, that is to say would tend to go up in the oblong holes 17 to follow the path of least resistance while the retractable rod 20 would tend to be maintained at 90 degrees from the longitudinal axis of the oblong holes 17, or in other words still, the effort undergone by the pivot rod 21 tends to remain normal at the edge of the oblong holes
    17. In addition, the weight of the section 12 tends to cause the latter to fall towards the central section 11, which would favor the ascent of the pivot rod 21 in the oblong holes 17.
    However, in the presence of the mass 18, the rod 21 is supported in the neck 25 which prevents it from hunting in the oblong holes 17. The mass 18 is therefore in the blocking state in which it limits, and preferably blocks ( that is to say limit entirely), the stroke of the pivot rod 21 in the oblong holes 17 when the angle a crosses the threshold of 90 degrees during folding. The mass 18 is maintained in this blocking state under the effect of its own weight. It is noted that the mass 18 comes into contact with the pivot rod 21 before the angle has reached or crossed 90 degrees. The stroke limitation of the pivot rod 21 in the oblong holes 17 can be partial if a clearance between the limiter 18 and the rod 21 is deemed useful.
    Furthermore, the mass 18 allows the pivot rod 21 to be directly against the end surface 22 at the start of unfolding, which limits any latency at the start of this step, the actuator 15 being directly able to repel section 12.
    To unfold the machine 10, the actuator 15 is deployed. As with the folding, the pivot rod 21 is retained by the mass 18 which prevents it from going up in the oblong holes 17. When the center of gravity of the section 12 crosses the plane V, the weight of the section 12 tends to bring it back down to the ground. The pivot rod 21 is found against the surface 22 and retains the section 12 in its descent. The angle a increases beyond 90 degrees then only the mass 18 moves away from the pivot rod 21.
    In the example shown, the direction of rotation R2 of the mass 18 (around the rod 30) is opposite to the direction of rotation RI of the corresponding section 12 (around the articulation 16). In the example of FIG. 2, during the folding of the section 12, the section 12 rotates counterclockwise while the hoop 18 rotates clockwise. Similarly, during the unfolding of the section 12, the section 12 rotates clockwise while the mass 18 rotates counterclockwise. Apart from the state of contact of the rim 26 with the pivot rod 21, the rotation R2 of the mass 18 has an angle equal in absolute value to the angle of the rotation RI of section 12. The arrows RI and R2 are only shown with reference to folding for readability.
    The mass 18 can optionally be provided with a blocker in position 23. In the embodiment shown, this blocker in position has a second opening 28 and a rod 31. This opening 28 is here through. The opening 28 is formed between the neck 25 and the opening 27. In FIG. 4, the rod 31 is inserted in the opening 28 and in the neighboring oblong holes 17. The rod 31 is retained in position by means of pins or any other suitable fixing element (bolt, rivet, etc.).
    The blocker 23 prevents the mass 18 from rotating relative to the rod 27 and therefore to the section 12 on which it is mounted. The blocker 23 therefore maintains the mass 18 in the locking position of the pivot rod 21 and the mass 18 obstructs the oblong holes 17. The mass is then in a locked state in which an additional fixing element 31, distinct from the rod 27 and of the rod 21, is put in place on the mass 18 to immobilize it in rotation relative to the section on which the oblong hole is formed. Here, the additional fixing element is the rod 31, possibly supplemented with an automatic pin.
    The passage of the mass 18 to the blocked state can be done from a free state, for example when the section 12 is in the working position allowing the ground tracking, such as horizontally. Manual manipulation of the mass 18 is then necessary to align the additional fastening element 31 with at least one of the oblong holes 17. The setting in the blocked state can also be done from the blocking state, in which case, the flange 26 is already in abutment against the pivot rod 21. In all cases, the actuator 15 should be sufficiently retracted so that the spout 24 crosses the pivot rod 21 before the fixing element 31 is put in place. The blocking state and the blocked state correspond to two states distinguished by the relation of the mass 18 to the neighboring parts: one in which the mass 18 limits the sliding of the pivot rod 21, the other in which the mass 18 is immobilized by a third party against section 12.
    Thus, in the working position, it is possible to apply a force F1 for pressing on the mass 18 which results in the application of a force F2 for pressing down (FIG. 4). The forces F1 and F2 are represented without respecting any particular scale or proportion of one with respect to the other. The application of the F2 force is particularly advantageous in certain working circumstances to ensure uniform work of constant quality. In general, the application of the F2 force makes it possible to avoid inadvertent lifting of the foldable section. In the case of a seed bar or tillage, this will allow for example to work at a significant and / or constant depth depending on the type of soil. This ensures uniform germination. In the case of a cutter bar or a verge cutter, this will apply a force greater than gravity to the upward force opposed by the treated plants. This maximizes the yield and / or harmonizes the cutting or grinding height.
    Preferably, at least one second mass similar or identical to the mass 18 described above is provided at the rear of the flange 14. Preferably still, the second mass is mounted on the same rod 30 as the first mass 18.
    As a variant, the sections 11 and 12 are connected by at least one other articulation. The axis of this other articulation is then aligned with the axis of the articulation 16. This other articulation can itself be assisted by a connection device 13 of the type described above, provided with one or more masses 18.
    As a variant, the flange 14 only has a plate 140 provided with an oblong hole 17. The rod 20 of the actuator is then forked at its end so as to offer good stability of the pivot rod 21 relative to the flange 14, and therefore sections 11 or 12 of the chassis therebetween. Reinforcements or extra thicknesses can be provided on the plate 140 to guarantee its resistance.
    The connecting device 13 has been described with reference to the folding of a lateral section 12 onto a central section 11. It should be noted that the invention also covers the implementation of the connecting device 13 more generally on any folding section on or relative to another section, which can be fixed or itself foldable.
    The articulation 16 described above has an axis parallel to the direction of advance of the machine 10. In a variant not shown, the axis of the articulation between the neighboring sections connected by the connection device is transverse to the direction of advance, for example perpendicular or oriented from 0 to 45 degrees relative to the direction of advance.
    权利要求:
    Claims (2)
    [1" id="c-fr-0001]
    Claims
    Agricultural machine which has two sections (11, 12) articulated with respect to each other, at least one oblong hole (17) being formed in one of the two sections, the machine comprising a connection device (13) having an actuator (15) configured to pivot one section relative to the other, and a stroke limiter (18),
    Γactuator carrying a movable pivot rod (21), of longitudinal axis transverse to the oblong hole, the movable pivot rod being arranged to slide in the length of the oblong hole, characterized in that the stroke limiter admits a blocking state in which it obstructs the oblong hole, thus limiting the sliding of the pivot rod in the oblong hole, the stroke limiter being able to reach the blocking state from a free state in which it is mounted so as to be able to rotate relative to the oblong hole.
    Agricultural machine according to the preceding claim, in which in the free state, the stroke limiter (18) is rotatable under the effect of its own weight during the rotation of one of the two sections relative to the 'other section.
    Agricultural machine according to the preceding claim, in which the direction of rotation (R2) of the stroke limiter (18) is opposite to the direction of rotation (RI) of the section carrying the oblong hole (17).
    Agricultural machine according to one of the preceding claims, in which the blocking state is reached during the folding of one of the two sections relative to the other by means of the actuator, and before a retractable rod (20 ) of the actuator is not found at 90 degrees from a longitudinal axis Al of the oblong hole (17).
    5. Agricultural machine according to one of the preceding claims, in which the stroke limiter has a spout (24), a neck (25) and a rim (26), the neck being a recess formed between the spout and the rim.
    5 6. Agricultural machine according to one of the preceding claims, in which the stroke limiter is defined by lengths DI to D4 relative to a pivot axis (270) around which the limiter (18) is pivotally mounted, DI being the distance between the pivot axis and the point of the spout (24) furthest from the pivot axis, D2 being the distance between the pivot axis and the point of the neck (25) the most
    10 close to the pivot axis, D3 being the distance between the pivot axis and the point of the flange (26) furthest from the pivot axis, D4 being the maximum distance between the pivot axis and the point closest to the pivot rod (21) when the latter is in the extreme position, abutting against an end surface (22) of the oblong hole (17) opposite the pivot axis (270), D3 being greater than D4, it even greater than D1, itself greater than or equal to D2.
    7. Agricultural machine according to one of the preceding claims, in which the travel limiter admits a blocked state in which the limiter is immobilized by a blocker in the position reached in the blocking state in which it obstructs
    20 the oblong hole and limits the sliding of the pivot rod in the oblong hole.
    8. Agricultural machine according to the preceding claim, wherein, in the blocked state, the stroke limiter is also a vector of thrust from one of the sections to the other of the sections via the actuator.
    9. Agricultural machine according to one of claims 7 or 8, in which, in the blocked state, the stroke blocker has:
    - an opening in the travel limiter opposite the oblong hole;
    - an additional fastening element housed in the opening and in the oblong hole.
    10. Agricultural machine according to one of the preceding claims, a first section being a central section of the machine, the second section being a foldable side section above the first section.
    1/2
    [2" id="c-fr-0002]
    2/2
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    同族专利:
    公开号 | 公开日
    AU2017208231A1|2018-03-08|
    FR3055082B1|2019-07-19|
    BR102017017550A2|2018-03-06|
    RU2017129268A|2019-02-20|
    US10426074B2|2019-10-01|
    CA2974577A1|2018-02-19|
    US20180049363A1|2018-02-22|
    EP3284330A1|2018-02-21|
    ZA201705289B|2019-06-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA1197130A|1982-05-03|1985-11-26|Bruce Friesen|Ground working implements and wing fold mechanismstherefore|
    EP0443338A1|1990-02-20|1991-08-28|Claas Saulgau Gmbh|Hay-making machine with lockable outer arms|
    EP0454602A1|1990-04-27|1991-10-30|Kuhn S.A.|Haymaking machine having several rotors|
    US20040069510A1|2002-10-09|2004-04-15|Dobson David A.|Locking wing lift mechanism for farm implements|
    NL6903371A|1969-03-05|1970-09-08|
    US4050523A|1975-09-18|1977-09-27|Chromalloy American Corporation|Folding wing disc harrow|
    US4023623A|1976-01-26|1977-05-17|Chromalloy American Corporation|Cultural implement with foldable tool supporting frame|
    US4074766A|1976-05-24|1978-02-21|Orthman Manufacturing Inc.|Floating folding tool bar having a lock means|
    DK143121C|1978-12-12|1981-12-14|Kongskilde Koncernselskab As|TOOL BOOM, NAME FOR AGRICULTURAL PURPOSES|
    US4249616A|1979-08-03|1981-02-10|Allis-Chalmers Corporation|Folding implement and folding support therefor|
    US4324296A|1981-01-26|1982-04-13|International Harvester Company|Multi-section agricultural implement including latch assembly therefor|
    US4328869A|1981-02-17|1982-05-11|International Harvester Company|Implement with wing lift including toggle links and roller|
    US4878545A|1987-06-15|1989-11-07|Victory Equipment Limited|Agricultural implement with foldable wing|
    US4923017A|1989-09-06|1990-05-08|Kinze Manufacturing, Inc.|Hinge for vertically folding wing section of agricultural implement|
    FR2754972B1|1996-10-31|1999-01-22|Kuhn Sa|CUTTING MACHINE HAVING THE DEVICE FOR ALLOWING THE CUTTING MECHANISM INTO DIFFERENT POSITIONS IS EQUIPPED WITH A RETRACTABLE STOP|
    US5921325A|1997-06-18|1999-07-13|Great Plains Manufacturing, Incorporated|Low transport height stack fold implement|
    HU0300512A2|2002-03-28|2004-09-28|Claas Saulgau Gmbh|Reaper knife|
    DE10303380A1|2003-01-29|2004-08-05|Claas Saulgau Gmbh|Agricultural harvester, comprising front attachment to be swiveled into particularly safe position for transport|
    US7073604B1|2005-02-22|2006-07-11|Morris Industries Ltd.|Hydraulic holding cylinder for wing lift mechanism|
    US8122970B2|2009-12-07|2012-02-28|Agco Corporation|Duplex frame hinge for farm implement|SE539217C2|2014-06-13|2017-05-16|Väderstad Holding Ab|Agricultural implements with relatively moving frame sections and ways to determine the position of the frame sections|
    GB201814800D0|2018-09-12|2018-10-24|Agco Feucht Gmbh|Improved agricultural implement|
    EP3884766A1|2020-03-25|2021-09-29|CNH Industrial Belgium N.V.|Agricultural implement|
    法律状态:
    2017-07-19| PLFP| Fee payment|Year of fee payment: 2 |
    2018-02-23| PLSC| Search report ready|Effective date: 20180223 |
    2018-08-27| PLFP| Fee payment|Year of fee payment: 3 |
    2019-08-26| PLFP| Fee payment|Year of fee payment: 4 |
    2020-08-25| PLFP| Fee payment|Year of fee payment: 5 |
    2020-11-13| CJ| Change in legal form|Effective date: 20201007 |
    2020-11-13| CD| Change of name or company name|Owner name: KUHN SAS, FR Effective date: 20201007 |
    2021-08-25| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1657831|2016-08-19|
    FR1657831A|FR3055082B1|2016-08-19|2016-08-19|AGRICULTURAL MACHINE HAVING A FOLDING SUPPORT DEVICE|FR1657831A| FR3055082B1|2016-08-19|2016-08-19|AGRICULTURAL MACHINE HAVING A FOLDING SUPPORT DEVICE|
    CA2974577A| CA2974577A1|2016-08-19|2017-07-25|Agricultural machine including a refolding assistance device|
    AU2017208231A| AU2017208231A1|2016-08-19|2017-07-25|Agricultural machinery including a folding support device|
    ZA2017/05289A| ZA201705289B|2016-08-19|2017-08-04|Agricultural machine having a folding assistance device|
    US15/671,174| US10426074B2|2016-08-19|2017-08-08|Agricultural machine having a folding assistance device|
    BR102017017550-2A| BR102017017550A2|2016-08-19|2017-08-16|AGRICULTURAL MACHINE BEHAVIORING A FOLDING AID DEVICE?|
    RU2017129268A| RU2017129268A|2016-08-19|2017-08-17|AGRICULTURAL MACHINE CONTAINING A FOLDING SECURITY DEVICE|
    EP17186682.5A| EP3284330A1|2016-08-19|2017-08-17|Agricultural machine having a folding assistance device|
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