Device for extracting and cutting cables installed in underground sheaths

Abstract

The present invention relates to a device (1) for extracting and cutting at least one cable (2), the cable being installed in an underground sheath, the device comprising a frame (3) supporting at least one drive module (4) and a cutting module (5), the device being characterized in that the cutting module (5) comprises at least: - a support (17) having a planar wall (18) provided with a hole (19) through which the at least one cable (2) passes; - a blade (20) pivotably mounted on the planar wall (18); and - an axial cam (22) attached to the blade (20), the axial cam cooperating with a follower roller (23) secured to the frame (3), and in that the rotation of the blade (20) is synchronized with the rotation of each of the first and second drive drums (7, 8) of the drive module (4) in order to continuously cut the at least one cable (2) into sections having a constant length.

Description

CABLE EXTRACTION AND CUTTING DEVICE FOR CABLES INSTALLED IN UNDERGROUND CONDUITS Technical field of the invention

[0001] The present invention relates to the general field of dismantling copper telecommunications cable networks installed in underground conduits, and more particularly to a device for extracting and cutting such cables. State of the art

[0002] Nowadays, it is well known that for telephone and internet access (ADSL), telephone companies and internet service providers use large quantities of copper telecommunications cables installed in underground conduits. This type of underground cable offers numerous advantages, notably durability, as these cables are not exposed to the harmful effects of adverse weather conditions such as snow, lightning, or windstorms, nor to damage caused by car accidents.

[0003] However, particularly with the emergence of broadband internet, public companies are tasked with dismantling the existing copper telecommunications network for two reasons: firstly, to free up underground conduits occupied by these old cables in order to make them available to new markets (for example, the installation of fiber optic telecommunications), and secondly, to recycle and recover the extracted copper, the value of which is estimated at several billion euros. Therefore, it is necessary to remove the old copper cables from their associated underground conduits.

[0004] Unlike installing a new cable in a new conduit, removing an old cable from an existing conduit is more delicate because the old cable is weaker and therefore more likely to break inside the conduit. Furthermore, the dirt that naturally accumulates in the conduit after many years can almost glue the cable to the walls. Another problem encountered when removing an old cable from a conduit is that the conduit is often cracked, and tree roots may have grown into the conduit and around the cable, making removal extremely difficult. Finally, once removed, the cable must be cut into sections to facilitate storage for recycling and recovery. It is therefore easy to understand that all these different operations are often quite difficult, time-consuming, and costly, particularly in terms of labor.

[0005] A common method for removing a cable from an underground conduit involves intermittently pulling a predetermined length of cable with a winch, which is then stopped to allow the cable to be cut into short sections. This procedure is repeated until the entire cable is removed from the conduit. The method described above is unsatisfactory in practice because it is tedious and time-consuming; it requires numerous stops and restarts and can also cause injuries to operators due to the frequent handling of cables or equipment, and the manual cutting performed using, for example, cable cutters.

[0006] To remove a cable from an underground conduit, it is also known to use at least partially devices such as those described in patent applications EP 3 694 063, CN 118 352 136 or US 11,462,892.

[0007] The aim of the present invention is therefore to provide a compact, easy-to-implement and safe cable extraction and cutting device for cables installed in underground conduits, requiring a small number of operators, said device also allowing for rapid and uninterrupted cable extraction and cutting until the entire cable is removed from the associated conduit.

[0008] According to the invention, a device for extracting and cutting at least one cable installed in a sheath is therefore proposed, comprising a frame supporting at least one drive module arranged to drive said at least one cable, in a drive direction D, with first and second drive drums pivoting in a counter-rotating manner, and a cutting module for cutting the at least one cable driven by the drive module, remarkable in that said cutting module comprises at least: - a support having a flat wall perpendicular to said drive direction D and being movable in translation relative to the frame so as to move said flat wall parallel to itself, the latter being provided with an orifice through which said at least one cable driven by the drive module passes,- a blade pivotally mounted on said flat wall around an axis of rotation perpendicular to said wall so as to sweep at least the entire surface of said orifice with each revolution, and - an axial cam fixed to said blade cooperating with a follower roller integral with the frame, and configured to allow translation of the support from an initial position along the drive direction D during the cutting phase of at least one cable by the blade and a return of said support to its initial position during the remainder of the rotation of said blade, and in that the rotation of the blade obtained by means of an actuator is synchronized with the rotation of each of the first and second drive drums of the drive module obtained by means of first and second actuators respectively, so that, when the blade makes a complete revolution,The first and second drive drums rotated to drive at least one cable over a length corresponding to a predetermined length of the section of cable cut by said blade.

[0009] Advantageously, the axial cam comprises an annular portion parallel to the flat wall, a helical ramp originating from one end of said annular portion and extending in a direction opposite to said flat wall, and an axial portion connecting the free ends of said annular portion and helical ramp.

[0010] The follower roller is advantageously mounted pivoting at the free end of a lever around an axis of rotation perpendicular to the drive direction D, said lever being mounted pivoting on the chassis around a horizontal axis of rotation parallel to said drive direction D between a "normal" position and a "retracted" position.

[0011] According to an advantageous embodiment, the first and second drive drums each pivot respectively around an axis of rotation, said axes of rotation being horizontal and belonging to the same vertical plane P and perpendicular to the drive direction D.

[0012] Said second drive drum is advantageously mobile relative to the first drive drum between a "drive" position and a "spreading" position.

[0013] According to an advantageous embodiment, the second drive drum is pivotally mounted on a roller guide carriage extending perpendicularly to plane P and being movable in vertical translation by means of two actuators and associated with a retaining device, said actuators being of the type hydraulic cylinders with adjustable pressure connected to a hydraulic control element of the type lever distributor with maintained action and being able to absorb variations in the stroke of said actuators.

[0014] Advantageously, the first and second drive drums are provided with the same number of toothed teeth, the respective teeth of the first and second drive drums being angularly offset.

[0015] According to an advantageous embodiment, the first and second actuators and the actuator are of the hydraulic geared motor type, the synchronization of the latter being then obtained by means of a hydraulic gear flow divider.

[0016] The extraction and cutting device preferably includes a winch attached to the chassis and arranged to, on an ad hoc basis and before the start of any extraction and cutting operation, detach at least one cable and engage it successively between the first and second drive drums of the drive module and through the opening of the cutting module, said winch being advantageously of the hydraulic type and is preferably controlled by a control lever with maintained action.

[0017] Advantageously, the extraction and cutting device is arranged to be mounted on a skid so that it can be used and easily moved in a trailer. Brief description of the figures

[0018] Other advantages and features will become clearer from the following description of an embodiment of the invention, with reference to the attached schematic figures in which:

[0019] is a perspective view of a device for extracting and cutting at least one cable installed in an underground conduit according to the invention,

[0020] is a perspective view of the extraction and cutting device from another viewpoint,

[0021] is a front view of the extraction and cutting device,

[0022] is a view of the right side of the extraction and cutting device,

[0023] is a top view of the extraction and cutting device, and

[0024] is an enlarged detail view of the cutting element of the extraction and cutting device from another viewing angle.

[0025] With reference to figures 1 to 6, a device 1 for extracting and cutting at least one cable 2 installed in a conduit, for example underground, comprising a frame 3, partially shown, supporting at least one drive module 4, a cutting module 5 and, where applicable, a winch 6, has been shown in accordance with the invention.

[0026] The drive module 4 drives at least one cable 2 to continuously extract it from the associated underground conduit. For this purpose, the drive module 4 comprises two drive drums 7, 8, hereinafter referred to as the first drive drum 7 and the second drive drum 8, pivoting in opposite directions around a rotation axis 9, 10, said rotation axes 9, 10 being horizontal and lying in the same vertical plane P (see diagram). The first and second drive drums 7, 8 are advantageously equipped with the same number of teeth 11, 12, preferably serrated. The respective teeth 11,12 of the first and second drive drums 7,8 are angularly offset to allow possibly meshing between said first and second drive drums 7,8, in the manner of a wheel and pinion of a gear.

[0027] The rotational drive of the first and second drive drums 7, 8 is ensured respectively by a first and second actuator 13, 14, the latter being advantageously identical and of the hydraulic geared motor type. Furthermore, the first and second actuators 13, 14 are preferably equipped with braking means, not shown, to prevent backlash of at least one cable 2.

[0028] In the embodiment shown, the first and second drive drums 7,8 are superimposed vertically and their axes of rotation 9,10 are horizontal, but it is understood that said axes of rotation 9,10 may be inclined or even vertical while still belonging to the same plane P, without going out of the scope of the present invention.

[0029] Said second drive drum 8 is movable relative to the first drive drum 7 between a "drive" position in which the respective teeth 11,12 of the first and second drive drums 7,8 are close together or even partly in contact with each other (depending on the dimensions of at least one cable 2), and a "spacing" position in which the respective teeth 11,12 of the first and second drive drums 7,8 are spread apart and are not in contact, and vice versa.As will be developed later, the "spacing" position of the second drive drum 8 allows sufficient space to engage the end of at least one cable 2 to be extracted between the first and second drive drums 7,8, while the "drive" position of the second drive drum 8 allows the at least one cable 2 to be gripped between the respective teeth 11,12 of the first and second drive drums 7,8, in order to drive said at least one cable 2 by friction, with a view to its extraction from the associated sheath, along a drive direction D perpendicular to the plane P, represented by an arrow on the diagram. For optimal operation of the extraction and cutting device 1, the drive direction D of the at least one cable 2 to be taken into consideration is that at the level of the cutting module 5 (See diagram 5).), the trajectory of said at least one cable 2 between the drive modules 4 and cutting module 5 may not be rectilinear, without going out of the scope of the present invention, the drive direction D then no longer being perpendicular to the plane P.

[0030] It is clear that the fact that the respective teeth 11,12 of the first and second drive drums 7,8 are angularly offset allows the at least one cable 2 to be locally deformed when the second drive drum 8 is in its "drive" position and, therefore, to increase the grip, which has the effect of optimizing the drive of said at least one cable 2.

[0031] To allow mobility between its "drive" and "spacing" positions, the second drive drum 8 is mounted pivoting around the axis of rotation 10 on a guide carriage 15 extending perpendicularly to the plane P and being movable in vertical translation by means of at least one actuator 16. Advantageously, said guide carriage 15 is of the roller carriage type and is set in motion by two actuators 16 of the type hydraulic cylinders with adjustable pressure, said actuators 16 being conventionally connected to a hydraulic control element, preferably of the type lever distributor with maintained action, in order to avoid any accidental actions.

[0032] Furthermore, since the guide trolley 15 is a falling load, it is advantageously associated with a retaining device, not shown, in case of hydraulic hose rupture.

[0033] Furthermore, during the drive phase of at least one cable 2, the space between the respective teeth 11,12 of the first and second drive drums 7,8 can vary according to the dimensions of at least one cable 2 and / or the overlap of several cables 2, which generates a pumping phenomenon on the actuators 16, the hydraulic control element associated with the latter is then able to absorb variations in the stroke of the actuators 16 between 20 and 40 mm, while ensuring the maintenance of the clamping force of the cable(s) 2.

[0034] As described above, the extraction and cutting device 1 also includes a cutting module 5 allowing continuous cutting of at least one cable 2 driven by the drive module 4 into portions of constant predetermined length.

[0035] For this purpose, the cutting module 5 comprises at least: - a support 17 having a flat wall 18 perpendicular to the drive direction D of at least one cable 2 and being movable in translation relative to the chassis 3 so as to move said flat wall 18 parallel to itself, the latter being provided with an orifice 19 through which passes said at least one cable 2 driven by the drive module 4, - a blade 20 pivotally mounted on the flat wall 18 of said support 17 about an axis of rotation 21 perpendicular to said wall 18 so as to sweep at least the entire surface of said orifice 19 with each revolution in order to cut the at least one cable 2 passing through it, - an axial cam 22 fixed on said blade 20 cooperating with a follower roller 23 fixed to the chassis 3,and configured to allow translation of the support 17 from an initial position along the drive direction D during the cutting phase of at least one cable 2 by the blade 20 and a return of said support 17 to its initial position during the remainder of the rotation of said blade 20.

[0036] It is clear that the support 17 translates along the drive direction D between a constant initial position at the beginning of the cutting phase of at least one cable 2 by the blade 20, and a variable final position at the end of said cutting phase. Indeed, as explained later, it is clear that the larger the diameter of at least one cable 2, the more the support 2 will translate and the further its final position will be from its initial position. Conversely, it is clear that the axial cam 22 is shaped to return the support 2 to the same initial position regardless of the diameter of at least one cable 2.

[0037] It is clear that, when the support 17 translates, the equipment attached to it, namely at least the blade 20 and the axial cam 22, also translate.

[0038] For reasons of compactness, the orifice 19 is positioned opposite the space between the first and second drive drums 7,8 and the axis of rotation 21 of the blade 20 belongs to a vertical plane P' passing through the center of said orifice 19 and is positioned below the latter and being parallel to the drive direction D of at least one cable 2. However, it is understood that the plane P' may be more or less inclined and that the axis of rotation 21 of the blade 20 will then be located more or less on the side of the center of said orifice 19, without departing from the scope of the present invention.

[0039] The axial cam 22, which is fixed on the blade 20, comprises an annular portion 24 parallel to the flat wall 18, a helical ramp 25 originating from one of the ends of said annular portion 24 and extending in a direction opposite to said flat wall 18, and an axial portion 26 connecting the free ends of said annular portion 24 and helical ramp 25.

[0040] The follower roller 23 is pivotally mounted at the free end of a lever 27 about an axis of rotation 28 perpendicular to the drive direction D of at least one cable 2. Furthermore, the lever 27 is pivotally mounted on the frame 3 about a horizontal axis of rotation 29 parallel to the drive direction D of at least one cable 2 between a "normal" position in which the axis of rotation 28 is horizontal and said follower roller 23 is engaged with the axial cam 22, and a "retracted" position in which said lever 27 is pivoted towards the orifice 19 in a counterclockwise or trigonometric direction R represented by an arrow on the, so as to escape the axial cam 22, said axis of rotation 28 being then inclined.

[0041] Thus, with this configuration, when the blade 20 rotates in a counterclockwise or trigonometric direction R', represented by an arrow on the, and its cutting edge 30 reaches the edge of the orifice 19, i.e., in the cutting zone, the follower roller 23 rests on the axial portion 26 of the axial cam 22 and is located at the end of the latter opposite the said flat wall 18. Then, when the said cutting edge 30 enters the at least one cable 2, the support 17 leaves its initial position, being driven by the at least one cable 2, itself driven by the first and second drive drums 7,8 of the drive module 4 according to the drive direction D, and the follower roller 23 moves along the said axial portion 26.Then, once at least one cable 2 has been cut, the blade 20 continues to rotate, out of the cutting area, in the direction R', and the follower roller 23 moves along the annular portion 24 and then along the helical ramp 25 so as to return the support 17 to its initial position to allow the cutting of a new section of at least one cable 2.

[0042] It is clear, on the one hand, that the back-and-forth translational movement of the support 17 allows a straight cut of at least one cable 2 without interruption of the drive of the latter by the drive module 4 and, on the other hand, that said back-and-forth translational movement is exclusively of the mechanical type, that is to say that it does not require any hydraulic, pneumatic or electrical drive and / or control.

[0043] To cut at least one cable 2, the blade 20 is driven in rotation around the axis of rotation 21 by an actuator 31, advantageously of the hydraulic geared motor type.

[0044] In order to continuously cut at least one cable 2 into sections of constant length corresponding to a predetermined length, the rotation of the blade 20 obtained by means of said actuator 31 is synchronized with the rotation of each of the first and second drive drums 7, 8 of the drive module 4 obtained by means of the first and second actuators 13, 14 respectively. Thus, when the blade 20 makes a complete revolution, the first and second drive drums 7, 8 have rotated so as to drive the at least one cable 2 over a length corresponding to the predetermined length of the section of the at least one cable 2 cut by said blade 20. Synchronization is achieved using a hydraulic gear-type flow divider, not shown in the figures, connected to the first and second actuators 13, 14 and to the actuator 31.

[0045] The person skilled in the art will have no difficulty in determining the characteristics (displacement, torque, power, …) of the different actuators and the hydraulic flow divider according to the types of cables 2 to be extracted and cut and to obtain sections of the predetermined length.

[0046] Furthermore, advantageously, the first and second actuators 13, 14 of the drive module 4 and the actuator 31 of the cutting module 5 operate either in automatic or manual mode, and can respectively drive the first and second drive drums 7, 8 and the blade assembly 20 – axial cam 22 in both directions of rotation and at several rotational speeds, preferably two: a low speed and a high speed, allowing, for example, the cable 2 to be driven at a low linear speed of between 10 and 40 m / min and at a high linear speed of between 25 and 75 m / min. It is understood that these linear speed values ​​depend on the capacity and power of the external hydraulic power unit that supplies the extraction and cutting device 1 according to the invention, and are therefore subject to variation.

[0047] Furthermore, in automatic mode, the follower roller 23 is engaged with the axial cam 22 and the direction of rotation of the blade 20 is direction R (see diagram). Additionally, in manual mode, it may be necessary to rotate the blade 20 in the opposite direction to perform a clearance operation; the follower roller 23 must then be able to pivot towards its "retracted" position to disengage from the axial cam 22, the cutting module 5 will be disengaged, and the support 17 will no longer be able to move.

[0048] As described previously, the extraction and cutting device 1 advantageously includes a winch 6 attached to the frame 3 and arranged to detach at least one cable 2 and bring it, on an ad hoc basis and before the start of any extraction and cutting operation, into said extraction and cutting device 1. For this purpose, the winch 6's pulling cable is fixed to the end of at least one cable 2 and pulls on this end to bring said at least one cable 2 out of the associated underground conduit and engage it successively between the first and second drive drums 7, 8 of the drive module 4 and through the opening 19 of the cutting module 5, in order to place said at least one cable 2 in a position allowing it to be cut into sections.

[0049] The winch 6 is an important element in the safety approach of the extraction and cutting device 1 according to the invention, because it allows the latter to self-load without peripheral human handling during the pulling phase of the cable 2 by the pulling cable of said winch 6. Indeed, without this configuration with the winch 6, the operators would have to manually handle the cable 2 to bring it into the extraction and cutting device 1 and would be exposed to the tensioned pulling cable, the risk of possible breakage of the latter and the associated accident.

[0050] While this configuration is advantageous due to its compact size, it is clear that the winch 6 can be independent of the chassis 3 of the extraction and cutting device 1, without departing from the scope of the present invention. Similarly, if the extraction and cutting device 1 is mounted on a hydraulic excavator instead of a bucket, the winch 6 may not be essential for the proper functioning of said extraction and cutting device 1.

[0051] Like the other actuators of the extraction and cutting device 1 according to the invention, the winch 6 is advantageously of the hydraulic type and is preferably controlled by a maintained action control lever, for obvious safety reasons.

[0052] Furthermore, it is understood that the various actuators or winches of the extraction and cutting device 1 according to the invention are not exclusively of the hydraulic type and may obviously be of a completely different type such as, for example, electric or pneumatic, without going out of the scope of the present invention.

[0053] Thus, in the hypothesis of an all-electric version, the various actuators, in particular the first and second actuators 13,14 and the actuator 31, or winch of the extraction and cutting device 1 could, for example, be servomotors, the synchronization of the latter then being obtained by variators and a digital axis card.

[0054] Similarly, in this hypothesis, the person skilled in the art will have no difficulty in determining the characteristics of the different actuators and synchronization according to the types of cables to be extracted and cut and to obtain sections of the predetermined length.

[0055] It is clear that with this configuration, operator safety is enhanced because they only handle at least one cable 2 and winch 6 once before the start of continuous extraction and cutting operations of said at least one cable 2.

[0056] Advantageously, the extraction and cutting device 1 is associated, on the one hand, with a pair of guide rollers 32 to facilitate the entry of at least one cable 2 into the drive module 4 and, on the other hand, with a chute-type or similar device for the evacuation of the cut sections to, for example, a truck bed.

[0057] Furthermore, the extraction and cutting device 1 is advantageously designed to be mounted on a skid, that is, a movable structure onto which the various elements of said extraction and cutting device 1 are fixed, so that it can be used and easily transported, for example, in a trailer. This latter configuration is advantageous because it limits the investment associated with the extraction and cutting device 1 according to the invention, since the companies for which said extraction and cutting device 1 is intended are generally already equipped with such a trailer. Moreover, using the extraction and cutting device 1 mounted on a trailer allows the weight of the trailer to be used to compensate for the pulling force of at least one cable 2 to be extracted and dismantled.

[0058] Finally, a person skilled in the art will have no difficulty in equipping the extraction and cutting device 1 according to the invention with components guaranteeing the protection and / or safety of operators such as, for example, a protective casing or emergency stop buttons.

[0059] Thus configured, the extraction and cutting device 1 according to the invention is used according to the following steps: - positioning of the extraction and cutting device 1 according to the invention near an access chamber to at least one cable 2 installed in an underground conduit, - delimitation of the work site and installation of road and pedestrian safety and delimitation elements, - identification of the at least one cable 2 to be dismantled in the chamber and manual cutting of the latter, - detachment of the at least one cable 2 to be dismantled, - connection of the end of the at least one cable 2 to be dismantled to the winch cable 6, then pulling said at least one cable 2 to engage it successively between the first and second drive drums 7,8 of the drive module 4 and through the orifice 19 of the cutting module 5, in order to place said at least one cable 2 in a position allowing it to be cut into sections,- movement of the second drive drum 8 from its "spacing" position to its "drive" position to grip the at least one cable 2 to be dismantled between the first and second drive drums 7,8, - detachment of the winch cable 6 from the end of the at least one cable 2 to be dismantled, - start of the automatic extraction and cutting phase of the at least one cable 2 to be dismantled, during which said at least one cable 2 is continuously driven by the first and second counter-rotating drive drums 7,8 of the drive module 4 and cut on the fly (continuously) by the blade 20 into sections of constant lengths.

[0060] The extraction and cutting device 1 according to the invention finds a particular application for the dismantling of copper telecommunication cables installed in underground conduits, but it can nevertheless be adapted for use in extracting and cutting other types of cables installed in conduits or similar underground or non-underground.

[0061] Finally, it goes without saying that the examples of device 1 for extracting and cutting at least one cable 2 according to the invention which have just been described are only particular illustrations, in no way limiting of the invention.

Claims

Device (1) for extracting and cutting at least one cable (2) installed in a sheath, comprising a frame (3) supporting at least one drive module (4) arranged to drive said at least one cable (2), in a drive direction D, with first and second drive drums (7,8) pivoting in a counter-rotating manner, and a cutting module (5) for cutting the at least one cable (2) driven by the drive module (4), characterized in that said cutting module (5) comprises at least: - a support (17) having a flat wall (18) perpendicular to said drive direction D and being movable in translation relative to the frame (3) so as to move said flat wall (18) parallel to itself, the latter being provided with an opening (19) through which said at least one cable (2) driven by the drive module (4) passes,- a blade (20) pivotally mounted on said flat wall (18) around an axis of rotation (21) perpendicular to said wall (18), so as to sweep at least the entire surface of said orifice (19) with each revolution, and - an axial cam (22) fixed on said blade (20) cooperating with a follower roller (23) integral with the frame (3), and shaped to allow translation of the support (17) from an initial position along the drive direction D during the cutting phase of at least one cable (2) by the blade (20) and a return of said support (17) to its initial position during the remainder of the rotation of said blade (20), and in that the rotation of the blade (20) obtained by means of an actuator (31) is synchronized with the rotation of each of the first and second drive drums (7, 8) of the drive module (4) obtained by means of first and second actuators respectively (13,14), so that, when the blade (20) makes a complete rotation,The first and second drive drums (7, 8) rotated to drive at least one cable (2) over a length corresponding to a predetermined length of the section of at least one cable (2) cut by said blade (20). Extraction and cutting device (1) according to claim 1 characterized in that the axial cam (22) comprises an annular portion (24) parallel to the flat wall (18), a helical ramp (25) originating from one of the ends of said annular portion (24) and extending in a direction opposite to said flat wall (18), and an axial portion (26) connecting the free ends of said annular portion (24) and helical ramp (25). Extraction and cutting device (1) according to any one of claims 1 or 2 characterized in that the follower roller (23) is pivotally mounted at the free end of a lever (27) about an axis of rotation (28) perpendicular to the drive direction D, said lever (27) being pivotally mounted on the chassis (3) about a horizontal axis of rotation (29) parallel to said drive direction D between a "normal" position and a "retracted" position. Extraction and cutting device (1) according to any one of claims 1 to 3 characterized in that the first and second drive drums (7,8) each pivot respectively around an axis of rotation (9,10), said axes of rotation (9,10) being horizontal and belonging to the same vertical plane P and perpendicular to the drive direction D. Extraction and cutting device (1) according to claim 4 characterized in that the second drive drum (8) is movable relative to the first drive drum (7) between a "drive" position and a "spacing" position. Extraction and cutting device (1) according to claim 5 characterized in that the second drive drum (8) is pivotally mounted on a roller guide carriage (15) extending perpendicularly to plane P and being movable in vertical translation by means of two actuators (16) and associated with a retaining member, said actuators (16) being of the type hydraulic cylinders with adjustable pressure connected to a hydraulic control element of the type lever distributor with maintained action and being able to absorb variations in the stroke of said actuators (16). Extraction and cutting device (1) according to any one of claims 4 to 6 characterized in that the first and second drive drums (7,8) are provided with the same number of notched teeth (11,12), said teeth (11,12) of the first and second drive drums (7,8) being angularly offset. Extraction and cutting device (1) according to any one of claims 1 to 7 characterized in that the first and second actuators (13,14) and the actuator (31) are of the hydraulic geared motor type, the synchronization of the latter being obtained by means of a hydraulic gear flow divider. Extraction and cutting device (1) according to any one of claims 1 to 8 characterized in that it comprises a winch (6) attached to the frame (3) and arranged to, on a punctual basis and before the start of any extraction and cutting operation, detach at least one cable (2) and engage it successively between the first and second drive drums (7,8) of the drive module (4) and through the orifice (19) of the cutting module (5), said winch (6) being of the hydraulic type and is preferably controlled by a maintained action control lever. Extraction and cutting device (1) according to any one of claims 1 to 9 characterized in that it is arranged to be placed on a skid so as to be able to be used and easily moved in a trailer.

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