WO1999055136A1 - Charrue multi-socs semi-portee avec bati articule - Google Patents
Charrue multi-socs semi-portee avec bati articule Download PDFInfo
- Publication number
- WO1999055136A1 WO1999055136A1 PCT/FR1999/000964 FR9900964W WO9955136A1 WO 1999055136 A1 WO1999055136 A1 WO 1999055136A1 FR 9900964 W FR9900964 W FR 9900964W WO 9955136 A1 WO9955136 A1 WO 9955136A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- distributor
- actuators
- plow
- rear section
- circuit
- Prior art date
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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
- A01B3/00—Ploughs with fixed plough-shares
- A01B3/46—Ploughs supported partly by tractor and partly by their own wheels
- A01B3/464—Alternating ploughs with frame rotating about a horizontal axis, e.g. turn-wrest ploughs
- A01B3/466—Alternating ploughs with frame rotating about a horizontal axis, e.g. turn-wrest ploughs the frame comprising an articulated beam
Definitions
- the present invention relates to semi-mounted multi-coulter plows, the frame of which consists of two sections articulated with respect to each other: a front section connected to the tractor and a rear section linked to the front section, at the level of the carriage. carrier.
- This type of plow makes it possible, as recalled in document FR-2 623 687 of the applicant, to carry out plowing while preserving optimum soil depth of the coulters, despite the length of the frame, in vacant lots.
- the plow described in the aforementioned document in fact has, in the working position, a certain flexibility in a vertical plane, at the level of the junction device interposed between the front section and the rear section of the frame.
- Document FR-2 730 896 shows additional means and in particular the introduction of a jointing device in the form of a universal joint which allows, in addition to freedom of movement of the rear section in the vertical plane, a possibility of transverse movement.
- This freedom of movement around a vertical axis is particularly advantageous at the end of the line when, after having started to extend the front bodies, the operator begins his turn while having the bodies of the rear section in the active plowing position.
- This flexibility at the junction also has the advantage when the latter is in the form of a universal joint, to dampen the oscillations of the rear section when the plow is in the transport position.
- the invention also has the advantage of simplifying the work of the operator during the maneuvers and in particular the maneuvers at the end of the line while allowing a reduction in the length of the scouts and the maneuvering time.
- the invention also makes it possible to reduce the length of the lookouts at the start of the line.
- the means which make it possible, at the junction joint, to secure the front and rear sections consist of actuators interposed between said sections, making it possible to achieve at least one alignment of the latter based on programmed positions corresponding for example to cylinder end positions and these actuators are implemented from the tractor to adjust and establish a resistance level in order to counteract the movement of the rear section relative to the front section, in a range from '' total freedom to an absence of freedom which corresponds to a quasi stiffening of the joining device without the latter however being able to be completely blocked.
- each actuator consists of two co-axial cylinders whose drums for example are coupled bottom to bottom and whose patellar ends of the rods are anchored for one on the front section and for the other on the rear section.
- the means for implementing the actuators consist of a reversing distributor controlled by a pressure-sensitive sequence valve prevailing in the hydraulic circuit serving to supply the cylinders for lifting the bodies plowing, which cylinders are arranged at the support carriage, which reversing distributor has a rest position and an inverted active position obtained when the pressure in said lifting cylinders is greater than a predetermined threshold displayed at said sequence valve.
- the actuator supply circuit located downstream of the pilot-operated reversing distributor, is connected, for each actuator, to the large chamber of one of the jacks constituting the actuator and to the small chamber of the another cylinder of the same actuator, which cylinders operate as single-acting cylinders and are implemented directly by means of the tractor distributor when said distributor is placed either in the body lifting position or in the body lowering position, which actuator supply circuit further comprises an accumulator device of the nitrogen ball type which makes it possible to maintain, under all circumstances, a certain elasticity between the front and rear sections.
- the supply circuit for the cylinders of the body lifting carriage comprises a closing valve making it possible, during transport, to maintain said cylinders in the active lifting position, independently of any action on the tractor distributor so as to ensure safety during transport in particular.
- the supply circuit of the actuating cylinders, through the piloted distributor comprises, upstream of said distributor, a non-return valve and, bypassing this valve, a throttling valve which makes it possible to release at will the pressure and drop it in the circuit of said actuator cylinders, by placing the tractor distributor in an ad-hoc position, to adjust the degree of suspension of the rear section, during transport, which section oscillates around the transverse horizontal axis of the junction device, which suspension takes place under the control of the accumulator interposed in the actuator supply circuit.
- the return circuit of the actuating cylinders comprises, upstream of the piloted distributor, a valve for closing the circuit which ensures the safety of the rear section in position transport, against a risk of falling in the event of loss of pressure following an operation of the tractor distributor.
- the jacks of each actuator are of the double-acting type and each jack of one of the actuators is connected to one of the jacks of the other actuator in a crossed fashion, that is to say that the large chamber of one is connected to the small chamber of the other and vice versa, and the supply of said cylinders takes place through two reversing distributors each located on a branch of the distributor's downstream circuit piloted reverser with, in addition, a return line crossing said reversing distributors, which return line joins on the one hand, the return line of the return circuit of the piloted reversing distributor, through a non-return valve and, on the other hand , the pressurized supply line of said piloted reversing distributor, also through a non-return valve, which pressurized feeding line allowing, on the one hand, when said reversing distributors associated with each actuator is nt in the rest position, adjust and control at will the resistance to movement of the rear section relative
- each actuator supply reversing distributor is controlled to pass from its rest position to its inverted position, by means of sensors for detecting the working position to the right or to the left, which sensors are each associated with a electromagnetic relay, for example, which they control and operate when they are in an inactive position, i.e. when the plow is in a position intermediate during the inversion phase, between the extreme right or left positions.
- the actuator circuit between the pilot-operated reversing distributor and the reversing distributors associated with each actuator, comprises a pressure switch, which pressure switch controls a relay which it operates when the actuators are under pressure, which relay then supplies in parallel with the right and left position sensors, the relays associated with the latter, so as to maintain, when the plow is placed in the working position on the right or on the left, the reversing distributor corresponding to said position in an inverted active position, thus offering the possibility of lifting the rear section at will and maintaining it in this position as long as the tractor distributor is not placed in the floating position, that is to say open, during the attack of a new ray.
- the rear section is raised by means of an intervention on the tractor distributor by placing it either in the body lifting position, or in the body lowering position, which lowering is controlled by means of a flow restrictor interposed on the lift cylinder circuit, between said lift cylinders and the connection of the sequence valve which implements the piloted distributor, which restrictor makes it possible to place said piloted distributor in the rest position due to deactivation of said sequence valve, which has the effect of authorizing the sending of pressurized fluid via the tractor distributor in the lowering position of the bodies, in the actuator circuit for raising said rear section simultaneously with the controlled lowering bodies.
- the invention provides means which make it possible to act on the position of the rear section.
- the invention also consists of a process for controlling and adjusting the movement of the rear section of an articulated semi-mounted plow, relative to the front section, which sections are connected by means of a seal and actuators as described previously, and this method consists in adjusting, from the tractor, the pressure of the hydraulic fluid present in the actuating members, from a value corresponding to total freedom of movement to a value which corresponds to a quasi-rigidity of the junction device, without reaching total blockage, so as to place and maintain the two sections substantially in alignment with one another.
- the method also consists in completely freeing the rear section by canceling the pressure of the fluid circulating in the actuating members, by involving the operator on the tractor distributor to lift the plowing bodies, that is to say - say send pressurized fluid into the lifting cylinders arranged on the support carriage.
- the method also consists in aligning the front and rear sections during the operation of lifting the plowing bodies, by introducing hydraulic fluid under pressure into the actuating members, as soon as the pressure of said fluid in the lift cylinders of the carriage reaches a predetermined threshold.
- the method consists in raising the rear section by means of the actuating members, after turning the plowing bodies and this before the descent of said bodies, in the absence of a restrictor on the supply circuit of the lifting cylinders, or during the descent of said bodies, in the presence of a restrictor on said circuit.
- the method consists in delaying the descent of the bodies of the rear section to reduce the size of the stand, that is to say in maintaining said section in the raised position by blocking the pressure of the hydraulic fluid in the actuators by the return of the tractor distributor to the neutral position.
- FIG. 1 shows a reversible plow, multi-coulter semi-mounted comprising a junction device in the form of a joint, at the level of the support carriage;
- FIG. 2 shows schematically, a portion of the plow at the support carriage and the joining device, with a particular representation for the wheels showing a wheel in transport position and a wheel in working position;
- FIG. 3 shows in perspective, schematically, the junction device in the form of a gimbal type joint, with the actuator members which allow the front and rear sections to be connected and to maintain alignment;
- FIG. 4 shows schematically the hydraulic circuit of the plow in a first version allowing in particular to control the alignment of the front and rear sections;
- FIG. 5 shows the hydraulic circuit when the bodies are raised and when the actuators are under pressure to achieve alignment of the front and rear sections for example, to allow the operation of turning the plow;
- FIG. 6 shows the hydraulic diagram according to an alternative embodiment, which diagram is supplemented with respect to the previous figures 4 and 5 to allow complete control of the actuator cylinders in order to carry out at will the lifting of the rear section so as to delay the introduction of the bodies of said rear section;
- Figure 7 shows the hydraulic circuit of Figure 6 when the rear section is held in the raised position before the descent of the plowing bodies
- FIG. 8 shows schematically the electrical circuit for intervention on the rear section, which circuit is in transport or intermediate phase of reversal;
- FIG. 10 shows the electrical circuit after the descent of the rear section, the latter being free;
- FIG. 11 shows the hydraulic diagram of Figure 6 modified to allow manual control, from the tractor, movements of the rear section.
- the long plows as shown in Figure 1 are connected to a tractor 1 by means of a coupling head 2, which head is mounted by means of a conventional structure 3 on the lifting system of the tractor, and it comprises a turning system 4 when, as shown in said figure, it is a reversible plow.
- This plow has a front section 5 which carries bodies 6 and a rear section 7 which also carries some plowing bodies 6.
- the front and rear sections form the frame 8 of the plow and they are separated by a junction device 9 which located at the level of the support carriage 10.
- This junction device is in the form of a universal joint and includes a hinge pin 11 which is horizontal when the plow is in the working position as shown in Figure 1, substantially perpendicular to the direction of travel.
- This axis 11 allows the rear section to oscillate in a vertical vertical plane so as to better match the relief of the terrain in particular in the wave terrain as shown in the figure.
- the junction device 9 also includes an articulation axis 12 perpendicular to the axis 11, which allows when the plow is in the working position, to obtain a movement of the rear section, transversely, to the right or to the left.
- This axis 12 also allows, when the plow is in the transport position, to obtain a possibility of oscillation of the rear section relative to the front section and, by means of the means described below, to obtain a damping which facilitates driving the plow in the transport position and, above all, cleaning the junction device and avoiding breakage.
- FIG. 2 shows the part of the frame of the plow at the level of the support carriage 10, that is to say the rear part of the front section 5 and the front part of the rear section 7. This part of the frame is shown seen from the side when the plow is in the transport position, carried by the wheels 13, or seen from above with the wheel 13 'disposed behind the last body 6 of the front section, in the normal plowing position, the other wheel of the carriage not being shown in this plowing position.
- the axis 11 is located in a vertical plane while the axis 12 is horizontal.
- axes 11 and 12 there is an intermediate piece 14 which forms a sort of cross between the front section 5 and the rear section 7.
- axes 11 and 12 are offset longitudinally: axis 11 is located for example at the rear end of the front section 5 and the axis 12 is located at the front end of the rear section 7.
- the carriage 10 is articulated on the front section 5 by means of an axis 15 interposed between the two.
- This carriage is a conventional carriage already described in other documents and in particular the aforementioned documents.
- it is the frame 8 and the front section 5 which rotates around the axis 15, which axis is located in the vertical median plane when the plow is in the transport position and it is placed in the direction of movement of the plow when the latter is in the normal working position.
- the carriage 10 comprises jacks 16 which make it possible to lift the frame of the plow, that is to say to lift the plowing bodies 6 at the end of the line for example, to remove them from the ground. These same jacks 16 make it possible to lower the bodies at the start of the line to start a new plowing.
- the joining device marked 9 in FIG. 1 includes the hinge pin 11 which is substantially vertical when the plow is in the transport position and horizontal when the plow is in the working position; it also includes the hinge pin 12 which is horizontal in the transport position and vertical in work position. These two axes 11 and 12 provide a connection of the universal joint type between the front section 5 and the rear section 7.
- actuators 17, shown in Figures 2 and 3 each consist of a pair of co-axial cylinders 19 and 20 secured on the same axis at the bottom of their respective barrel.
- the patellar ends 21 and 22 of the jacks 19 and 20 respectively are anchored, one on a yoke 23 secured to the front section 5 and the other on a yoke 24 arranged at the front end of the rear section 7.
- the travel of each of these jacks 19 and 20 is of the order of a few centimeters, 10 cm for example.
- jacks are adjusted so that, for each actuator, when one of the jacks is in full extension at the end of the stroke and the other in full retraction at the end of the stroke, the rear section 7 is in alignment with the section before 5, as if the frame were in one piece over the entire length of the plow, placing all the bodies 6 in planes parallel to each other and in a horizontal median plane passing through the axis 11 when the plow is in position job.
- the actuators 17 are each arranged on either side of the above median plane, that is to say on the same side as the right and left plow bodies. We will therefore use, as needed, the benchmarks 17G to designate the actuator which is located on the side of the bodies working on the left and 17D for the actuator which is located on the side of the bodies working on the right, and we will also use these marks G and D for cylinders 19 and 20, as required. In the transport position, the actuators 17 are located above the axis
- Figure 3 shows schematically in perspective, the area of the junction device showing the actuators 17G and 17D with the barrels of the cut-away cylinders.
- the rear end of the front section 5 which includes the articulation axis 11, which axis allows the movement of the rear section in a vertical plane in alignment with the direction of advance when the plow is in the working position .
- the front end of the rear section 7 comprises the axis 12 which is perpendicular to the axis 11 and it is this axis which allows a lateral movement, when the plow is in the working position, and a movement in the median vertical plane when the plow is in the transport position.
- the intermediate part 14 between the two axes constitutes the crosspiece of this connection joint between the front 5 and rear sections 7.
- the control and piloting of this articulation joint is effected by means of the actuators 17G and 17D.
- These actuators as shown above in Figure 2, each consist of two identical cylinders 19 and 20 whose drums are joined bottom to bottom, welded for example.
- the end 21 and 22 of each of these jacks is anchored by means of yokes 23 and 24, respectively, on the rear part of the front section 5 and on the front part of the rear section 7.
- the rods of these different jacks are adjustable to allow an adjustment of the position of the front section relative to the rear section 7.
- FIG. 4 represents the hydraulic diagram with the components situated on the one hand on the plow, to the right of the thin dashed line marking the separation, and on the other hand to the left, on the tractor.
- the distributor 26 On the tractor, there is the distributor 26, which can be operated by the operator. This distributor has a neutral position F for which the circuits are closed both the supply circuit 27 and the return circuit 29.
- This neutral or closed position also makes it possible to maintain the pressures in the state in the hydraulic circuits and components of the plow.
- On either side of the neutral position there is a raised body position mentioned by the letter L and a lowered body position mentioned by the letter D.
- the lowered body position is located between the neutral position and a floating position or open marked with the letter O. In this floating position, the supply circuit 27 is closed while the return circuit 29 is open on the two supply and return lines of the plow circuits, that is to say that this position allows to remove the pressure in the hydraulic circuits and components of the plow.
- jacks 16 which are arranged at the level of the carriage 10. These jacks 16 make it possible to lift the frame 8 of the plow to remove the bodies from the ground or to lower said frame to return said bodies to the working position .
- the actuators 17G and 17D each consisting of the cylinders 19 and 20.
- the actuators 17 are supplied with power through an inverter distributor 30 shown in the rest position.
- This reversing distributor 30 is controlled by means sensitive to the pressure prevailing at the cylinders 16 of the carriage 10.
- this reversing distributor 30 is used to pass from its rest position to its inverted position by a valve 31 of the sequence valve type. The change of state of this sequence valve takes place when the pressure in the circuit 32 which supplies the lifting cylinders 16 reaches a predetermined threshold. This threshold is established according to the weight of the plow and the number of bodies arranged on the rear section and also according to the maximum pressure supplied by the tractor.
- this threshold is located above the value of the pressure reached in the jacks 16 when the latter reach their normal active position for lifting the frame and are in full extension at the end of the stroke.
- the distributor 30 reverses by changing position as soon as the valve 31 connected to the circuit 32 is activated, that is to say when the pressure in said circuit 32 reaches the predetermined threshold.
- the distributor 30 is kept in the rest position when the pressure prevailing in the jacks 16 is between 0 and the predetermined threshold.
- the circuit 33 which is used to supply the actuators 17G and D, and which is located downstream of the piloted distributor 30, makes it possible to supply simultaneously for each actuator, for example the small chamber of the cylinder 19 and the large chamber of the cylinder 20.
- the cylinders 19 and 20 are of the single acting type.
- each actuator 17G and D reacts in the same way in that the jacks 19 fully retract and the jacks 20 are positioned in full extension so as to establish positions stable and fixed programmed in advance which correspond to limit switches, and which make it possible to obtain, as mentioned previously, well-established positions of alignment for the rear section with respect to the front section 5.
- a hydraulic accumulator 34 of the nitrogen ball type, is positioned on the circuit 33 so as to maintain, at all times, a certain flexibility at the level of the actuators 17 and consequently, at least a certain flexibility under all circumstances for the rear section 7.
- a joint or movement is thus obtained, the freedom of which is controlled.
- This resistance can be established between a value which is zero when the pressure is zero in the circuit actuators 17 up to a maximum value which corresponds to a virtual immobilization of the rear section relative to the front section, without however reaching a total blockage taking into account the presence of the accumulator 34. Still in FIG.
- an electro-valve 35 arranged on the circuit 33, preferably upstream of the hydraulic accumulator 34, between the latter and the distributor 30.
- This non-return type electro-valve 35 is controlled directly from the tractor, by any suitable means such as for example a simple switch; it allows the operator to block, as he sees fit, the pressure which is established in the circuit 33. Thus, for example, he can maintain the rear section in the raised position or in a position aligned with the front section as required.
- the circuit 32 which is used to supply the jacks 16 comprises, upstream of the connection of the sequence valve 31, a tap 36 which makes it possible to isolate the circuit 32 in particular when, as shown in FIG. 5, the jacks 16 are in the active position of lifting of the frame, for the transport position.
- the presence of this tap 36 constitutes transport security in order to lock the jacks 16 in the active lifting position.
- FIG. 5 shows the distributor 26 of the tractor in the normal position for lifting the bodies.
- the valve 36 is open and allows actuation of the jacks 16 to lift the bodies.
- these jacks 16 arrive at the end of the race, the frame being raised, the pressure rises to the point of reaching the predetermined threshold which allows the implementation of the sequence valve 31 and, consequently, the reversal of the distributor 30.
- the circuit 33 serving to supply the actuators 17 is connected through the distributor 30, to the circuit 29 returning to the tank.
- the actuators 17 are both inactive, that is to say that the articulation is completely free both around the axis 11 and the axis 12.
- the pressure possibly existing in the actuators 17 is released completely.
- the rear section 7 is completely free relative to the front section so that the bodies remain on the ground and, in addition, the front section 5 can be misaligned laterally with respect to the rear section 7 in the event of a maneuver such as for example a right turn or left as appropriate.
- the operator releases the distributor 26 which is automatically placed in the neutral position F. In this position, the pressure is maintained in all the circuits and in particular in the circuit 32 of the lifting cylinders 16 and the actuator supply circuit 33.
- valve 39 is also provided on the return circuit 40, between the piloted distributor 30 and the distributor 26 of the tractor, which valve 39 is positioned on the plow like the valve 36 and the valve 37.
- the throttling valve 37 is placed in derivation of a non-return valve 38 which is located on the plow, on the supply circuit 41 between the distributor 26 of the tractor and the reversing distributor 30, which valve is located downstream of the connection. of circuit 32, between the input of this circuit 32 and the reversing distributor 30.
- FIGS. 6 et seq. Additional means in the form of reversing distributors 45G and 45D used to produce a cross supply of the actuators of the actuators 17G and D.
- the actuator supply circuit 33 splits to pass through each of the reversing distributors 45.
- valves 47 and 49 prohibit the introduction of the pressurized fluid into the return circuit 46, when handling the distributor 26 of the tractor.
- the reversing distributors 45G and D are implemented by means of a control circuit which is shown in FIGS. 8, 9 and 10. It is noted that these distributors 45G and D do not change anything in the operation described above in connection with FIGS. 4 and 5, when they are in the rest position, as shown in FIG. 6.
- the inversion of one or other of the distributors 45 makes it possible, as shown in FIG. 7, to obtain for one of the actuators, a total retraction of its two jacks while the other actuator sees its two jacks expanding. total, and each time the cylinders 19 and 20 of each actuator are at the end of their travel.
- This situation makes it possible to misalign the front and rear sections and in particular to pivot the rear section 7 relative to the axis 11 which has for effect, when the plow is positioned with bodies to the right or to the left for plowing, to raise the rear bodies and to delay their introduction into the ground when starting a new line.
- the inversion of one or other of the distributors 45G and D comes from information obtained by appropriate sensors not shown in FIG. 2, positioned on the plow for example, which make it possible to detect the working position to the right or to left, at the end of the plow turning operation.
- FIG. 8 shows an electrical diagram which includes sensors 51 sensitive to the left or right position of the plow: a sensor 51 G, in the form of a switch and a sensor 51 D of the same type.
- these sensors 51 When they are in the inactive position, as shown in FIG. 8, these sensors 51 keep the circuit of the reversing distributors 45 open, that is to say that these distributors 45 are in the rest position. In the rest position as shown in FIG. 8, the sensors 51 allow the supply by means of the circuits 52, and the placing in active position of the relay contacts 53G and 53D. These relays 53 when activated as shown in FIG. 8, make it possible to close a portion of the circuits 54 which serve to supply the right and left reversing distributors 45 respectively.
- each distributor 45 is subject to a double condition in order to be supplied: on the one hand, its corresponding relay 53 must itself be supplied and, on the other hand, the corresponding sensor 51 must also be in the active position. to close the circuit 54.
- the relays 53 are supplied and placed in the active position when the sensors 51 are in the inactive position. Note, however, that these relays 53 are supplied in parallel to be placed in the active position by means of an additional relay 55 which is itself placed in the active position under the effect of a switch 56.
- This switch 56 is set to works by means of a pressure switch 57 connected to the hydraulic circuit 33 which is used to supply the actuators 17. Thus, when a certain pressure prevails in the hydraulic circuit 33, the switch 56 is closed as shown in FIG. 9.
- this switch 56 makes it possible to put the relay 55 in the active position, which supplies and puts the two in active position.
- the switch 56 is placed in the active position when the pressure prevails in the actuator circuit, that is to say in particular when the plow is raised during the turning maneuver.
- the senor 51 D changes state, as shown in FIG. 9, reversing its contacts so as to supply the reversing distributor 45D, placing the latter in the inverted active position as also shown in FIG. 7 on the hydraulic diagram. .
- relay 53D remains in the active position, supplied by the relay 55 which also remains in the active position due to the closing of the switch 56 of the pressure switch 57. In this configuration, it is possible to raise the rear section by placing the tractor distributor 26 in the lifting position L.
- This flow restrictor 59 is placed in derivation of a non-return valve 60, and it is located between the connection of the sequence valve 31 and the jacks 16.
- FIG. 11 shows an alternative embodiment of the means for implementing the actuators 17D and 17G which allows the operator to intervene directly, from the tractor cabin, to modify the position of the rear section and in particular the lifting or l 'to lower.
- the driver has a box 60 installed in the tractor cabin. This box 60 is connected, by means of wires 61, to each of the reversing distributors 45D and 45G.
- This box 60 consists of a switch with three positions: a neutral position N, a position D corresponding to plowing on the right which allows, on the one hand, to reverse, for example, the reversing distributor 45D and, on the other hand, by placing the main distributor in position D, that is to say lowering, supplying the actuators 17D and G to lift the rear section 7.
- FIGS. 6 and 11 simplifies installation and eliminates the electrical components shown in Figures 8 to 10 which constitute a kind of option.
- these various embodiments may include, as illustrated in FIGS. 6 and 11, in thin dashed lines, an electro-valve.
- This electro-valve 35 is located in the same way on the circuit 33 by which the actuators are supplied, preferably between the accumulator 34 and the distributor 30.
- This construction makes it possible to maintain the rear section of the plow in the raised position for certain maneuvers such as for example the raising of the frame by means of the jacks 16 of the carriage.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU34264/99A AU3426499A (en) | 1998-04-24 | 1999-04-22 | Semi-mounted gang plough with articulated fixture |
NO20005331A NO20005331D0 (no) | 1998-04-24 | 2000-10-23 | SemibÕret plogsett med leddet fikstur |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/05455 | 1998-04-24 | ||
FR9805455A FR2777736B1 (fr) | 1998-04-24 | 1998-04-24 | Charrue multi-socs semi-portee avec bati articule |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999055136A1 true WO1999055136A1 (fr) | 1999-11-04 |
Family
ID=9525877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/000964 WO1999055136A1 (fr) | 1998-04-24 | 1999-04-22 | Charrue multi-socs semi-portee avec bati articule |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU3426499A (fr) |
FR (1) | FR2777736B1 (fr) |
NO (1) | NO20005331D0 (fr) |
PL (1) | PL343626A1 (fr) |
WO (1) | WO1999055136A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2875673B1 (fr) * | 2004-09-28 | 2006-11-24 | Kuhn Huard S A Sa | Charrue semi-portee comportant un dispositif reglable a memoire |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2623687A1 (fr) | 1987-11-26 | 1989-06-02 | Naud Expl Charrues | Perfectionnement aux charrues de grande longueur |
FR2701798A1 (fr) * | 1993-02-24 | 1994-09-02 | Huard Sa | Charrue multi-socs réversible semi-portée. |
WO1996024237A1 (fr) * | 1995-02-10 | 1996-08-15 | Kverneland Klepp A/S | Charrue reversible a plusieurs sections |
FR2730896A1 (fr) | 1995-02-28 | 1996-08-30 | Naud Expl Charrues | Charrue semi-portee de grande longueur a bati articule |
-
1998
- 1998-04-24 FR FR9805455A patent/FR2777736B1/fr not_active Expired - Fee Related
-
1999
- 1999-04-22 AU AU34264/99A patent/AU3426499A/en not_active Abandoned
- 1999-04-22 PL PL34362699A patent/PL343626A1/xx unknown
- 1999-04-22 WO PCT/FR1999/000964 patent/WO1999055136A1/fr active Application Filing
-
2000
- 2000-10-23 NO NO20005331A patent/NO20005331D0/no unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2623687A1 (fr) | 1987-11-26 | 1989-06-02 | Naud Expl Charrues | Perfectionnement aux charrues de grande longueur |
FR2701798A1 (fr) * | 1993-02-24 | 1994-09-02 | Huard Sa | Charrue multi-socs réversible semi-portée. |
WO1996024237A1 (fr) * | 1995-02-10 | 1996-08-15 | Kverneland Klepp A/S | Charrue reversible a plusieurs sections |
FR2730896A1 (fr) | 1995-02-28 | 1996-08-30 | Naud Expl Charrues | Charrue semi-portee de grande longueur a bati articule |
WO1996026633A1 (fr) * | 1995-02-28 | 1996-09-06 | Charrues Naud S.A. | Charrue semi-portee de grande longueur a bati articule |
Non-Patent Citations (1)
Title |
---|
"REVERSIBLE PLOUGH", RESEARCH DISCLOSURE, no. 383, 1 March 1996 (1996-03-01), pages 189, XP000581327 * |
Also Published As
Publication number | Publication date |
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PL343626A1 (en) | 2001-08-27 |
FR2777736A1 (fr) | 1999-10-29 |
AU3426499A (en) | 1999-11-16 |
FR2777736B1 (fr) | 2000-07-13 |
NO20005331D0 (no) | 2000-10-23 |
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