FR2544240A1 - MACHINE FOR CUTTING AERIAL CABLES, IN PARTICULAR THOSE COMPRISING STEEL-ALUMINUM COMPONENTS - Google Patents

Abstract

THE INVENTION CONCERNS A MACHINE FOR CUTTING OFF OVERHEAD CABLES, IN PARTICULAR THOSE WITH STEEL-ALUMINUM COMPONENTS. THE MACHINE IS REMARKABLE IN THAT IT INCLUDES MEANS AVAILABLE IN THE FRONT OF THE MACHINE AUTHORIZING THE INTRODUCTION 6, THE CONTROL 28 AND THE DRIVING 8, 9 CONTINUOUSLY OF A CABLE, AT A VARIABLE SPEED, AND THE GUIDANCE 10 TOWARDS THE CUTTING DEVICE, AT THE REAR OF THE SAID MACHINE, THESE DEVICE INCLUDING ONE OR MORE CUTTING TOOLS 11 IN FIXED POSITION, LOCATED AT THE END OF THE GUIDING ZONE OF THE CABLE, AND ONE OR MORE COUNTER-TOOLS OF CUT 13, MOUNTED IN ROTATION ON A DRIVE AXIS ENSURING, ACCORDING TO A PRE-ESTABLISHED CYCLE WITH THE CABLE ADVANCE SPEED, ITS CUTTING INTO PIECES, CAUSING THE SEPARATION OF ITS COMPONENTS.

Description

The subject of the invention is a machine for cutting the cables

  aerial vehicles, especially those with aluminum steel components.

  Overhead, medium and high voltage cables, without external insulation, generally include a steel carrying cable surrounded by an outer aluminum strand When, for various reasons, the overhead lines are changed, the problem of

  the recovery of the constituent materials, arises

  This is achieved by magnetic or densimetric sorting of materials, after heat degreasing, or any other suitable means. This requires the conditioning of cables in small sections, which is now empirically obtained.

  using crocodile shears working at high speed

  The separation of the steel load-bearing core from the stranded conductors and the coating sheaths is achieved by pulling

  cable and stuffing aluminum conductors on stops.

  This operation is long, impractical and in no way adapted

  recovery on an industrial scale.

  According to the prior art, it is known for different applications, machines to grind the cables which are insulated or not These cables are arranged in bulk in grinding tanks and cutting blades, mounted on rotors, provide the broyas

different materials.

  The grinding technique can not be used for processing

  recovery of the recovered aerial cables as a result of the high cost of

necessary investments.

  The aim sought according to the invention was therefore to

  point a machine that can be used more particularly for

  aerial vehicles of the aluminum-steel type, and operating in good

productivity conditions.

  Investment for a user is also reasonable

  and not comparable to that of a grinder.

  Another object of the invention was to ensure a functioning

  reliable and continuous with a speed adapted to the section of the aerial cables, while first

their external appearance.

  Another object was to facilitate the separation of the constituent materials, after passage on the machine and beforehand to

  the magnetic or densymetric sorting operation.

  According to a first characteristic of the invention, the

  China includes means at the front, allowing the intro

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  duction, control and continuous training of a cable to

  variable speed, and guidance to a trimming device.

  in the back of the machine, the said device

  taking one or more stationary cutting tools at the end of the cable guide area and one or more

  counter-cutting tools mounted in rotation on a drive shaft

  in accordance with a pre-established cycle with the speed of advance

  cable, cutting it into pieces, causing the

  separation of its different components.

  These and other characteristics will emerge from the

following the description.

  To fix the object of the invention, without however limiting it, to the figures of the attached drawings o:

  FIG. 1 is a diagrammatic perspective view

  trant appearance of the machine according to the invention; Figure 2 is a partial sectional view of the device for advancing the aerial cable to the cutting device; Figure 3 is a top view of the device according to Figure 2, with half-view, the mounting of the tool holder rotating on the drive shaft; Figure 4 is a partial sectional view illustrating the locking mode of the cutting tools; Figure 5 is a partial sectional view illustrating the particular shape of the rotating tool holder; FIG. 6 is a sectional view along the line A-A of the

figure 5.

  In order to make the object of the invention more concrete, it is now described in a nonlimiting form illustrated in FIGS.

figures of the drawings.

  The cutting machine for the aerial cables illustrated in FIG. 1 comprises a frame (1) on the front part of which are disposed a speed-controlled geared motor gearbox group referenced in FIG.

  together by (2) and a programming cabinet (3) The introduction

  the cable to be treated is fed from the front of the machine,

  while the cutting device is located at the rear A car-

  ter profiled (4) protects the latter.

  In addition, at the front of the machine, a support is provided

  (5) properly attached to the frame and having an opening

  in which a cable guide sleeve (6) is engaged,

  sleeve being connected to the support by fixing screws (7).

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  The cable previously guided by the sheath, is then engaged between two rollers (8 9) The lower roll (8) ensures the drive of the cable towards the cutting place, while the upper roll (9) provides a support on the cable and can be raised in position by a lever secured to a device apoaiuf or enslaved, ensuring the pressure The lower roller is associated

  geared motor gearbox.

  The cable is then driven and guided by slideways (10) forming a channel, profiled U-shaped and integral with the

  frame, to the cutting device which comprises a first cut-

  (11) mounted on a fixed position support (12) and a second knife (13) mounted on a tool holder (14) rotated on a

  interengagement axis (15) suitably controlled.

  The first fixed support knife (11) and the second knife

  mobile devices are in the form of parallel plates.

  diagonal or square, so that the four edges can be used as a cutting tool The thickness of these inserts is

  calculated to allow several successive sharpening.

  As illustrated in particular in FIG. 2, the frame on which

  the bottom wall of the U-shaped slide has a box

  inner shoulder (16) allowing the positioning of a

  screw (17) whose end penetrates into the thickness of said knife.

  An intermediate centering block (31), maintained in the body of the frame, is also traversed by this screw for fixing the tool and is intended to balance the forces The head of the screw

  link is maintained and locked in position by a

  Safety device For this purpose, as illustrated in FIG. 4, a blind hole (18) is provided in the body of the frame and partially opens into the opening constituting the housing of the connecting rod. The blind hole (18) is supported. and receives in its fnd, a spring (19) biased in pressure by an axis (20) bearing under the action of the relaxation of said spring, against the rear face of a plug (21) The latter has an opening

  center for the passage of a reported pusher element,

  tible to act against the axis and spring, so as to allow the passage and release of the screw head which is then accessible. To ensure the change of the cutting edge of the knife,

  just unscrew the stem after having previously unscrewed it.

locked.

A 2544240

  According to another characteristic of the invention, the knife (13) is mounted on a profiled tool holder (14) rotatably mounted

on a drive shaft.

  According to a non-limiting embodiment, this tool-holder in the form of a double lever, in the version with a single cutting device, rotates on the drive shaft. The front part receives the tool and also has a recessed housing (23). in which is disposed the connecting screw (24) whose end penetrates into

  the thickness of the knife (13) A centering block (23), intermediate

  diaire, located between the tool holder and the front face of the lever, is provided with an inner housing receiving the body of the connecting screw (24) and provides, as previously, the balance of forces A wafer adjustment and positioning (26) is adapted between the tool holder and the knife (13) A locking device (27), identical to that previously described for

  the fixed knife is established in the body of the lever.

  proud of the cutting edge of the knife, it is enough to act on the

locking device.

  On the opposite side of the tool, the lever forms a balancing flyweight during its rotation. The helical profile of the flyweight is arranged to enable the cable to be processed to advance before it is cut when the tool is in motion. is cleared, and its cut, when it comes into contact with the cable,

  the automatic drive of the cable being continuous.

  In Figure 3 of the drawings, there is illustrated in top view,

  the device for advancing and cutting the machine according to the in-

  vention. There are diagrammatic representations of mounting of the drive shaft on the frame 2 with appropriate sealing means, according to a common, known technique.

of the man of the art.

  According to one characteristic of the invention, provision has been made

  the front of the machine, in front of the support (5) of the guiding sheath

  cable introduction and introduction, a device for controlling the

  external configuration of the cable to be treated, serving as

for the operator.

  For this purpose, as illustrated in particular in Figure 2, there is provided a calibration ring (28) providing control and safety functions, mounted on an axis of the joint (29).

  inserted between the branches of a clevis piece (30), solidified

of the support (5).

  The ring (28) extends at its lower part in the form of a tab (32) and bears on an electromechanical contact

  (33) in conjunction with the control of the power unit ensuring the en-

  dragging the cable guide rollers When the cable is introduced into the ring and exhibits an apparent deformation

  protruding, it is understandable that it comes into bu-

  against the said ring, provoking by its support, its

  As a result of the articulation of the ring, the movement

  aforementioned causes the breaking of the contact of the lower end

  of the ring with the aforementioned electromechanical means, which

  causes the motor to stop immediately.

  Switching on is only triggered by positioning

  the ring, after having removed the deformation

  cable that caused the machine to stop.

  Other means may be provided to ensure

  control of the calibration of the cut-off cable, such as, for example,

  photocells, feelers and others.

  The advantages are apparent from the invention. In particular, the particular relationship defined between the speed

  progress of the cable and the length of the sections to be cut.

  The variation of speed which aims to select the length

  cutting, between 5 and 15 centimeters for example; the goal

  being the largest compatible length of the

  cable with the separation of the stranding wires surrounding the central core Then all that remains to be done by magnetic sorting or other systems, the separation of the various materials

constituent parts of the cable.

  The machine according to the invention ensures a continuous work, at high speed, and allows the treatment of recovered cables to

the industrial scale.

  The invention is in no way limited to that of these modes of application, nor to those of the embodiments of these various parts which have more especially been indicated; she

  on the contrary, embraces all variants.

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Claims (2)

R E V E N D I C A T IO N S S   -1 cutting machine for overhead cables and in particular cables with aluminum steel components, characterized in that it comprises means arranged at the front of the machine   authorizing the introduction, control and training of   a cable, at a variable speed, and the guidance to a cut-off device, at the rear of said machine, said device comprising one or more cutting tools (11) at   fixed position, located at the end of the cable guide area.   ble, and one or more cutting counter-tools (13) mounted in   rotation on a drive shaft, ensuring in a pre-   established with the speed of advance of the cable, its cutting by   pieces, causing the separation of its components.   -2 Machine according to claim 1, characterized in that it comprises a guide sleeve (6) mounted on a support (5) connected to the frame <1) wherein is introduced the cable which is engaged at its output, between a fixed position drive roller (8) and a movable position support roller (9) secured to a pressure control means, depending on the type of cable, said cable being guided in a corridor (10) appropriate, towards cutting device.   -3 Machine according to claim 1, characterized in that the fixed knife (11) and the counter-tool (13) consist of parallelepiped or square plates, several faces of which constitute the cutting zones, for the purpose of cutting the cable.   -4 Machine according to claim 1, characterized in that the cutting counterpart (13) is mounted on a tool holder (14) in the form of a double lever, the front part being arranged   to receive the cutting tool and the rear part being   the opposite in the form of balance weight.   -5 Machine according to any one of claims 3   and 4, characterized in that the fixed-position cutting tool and the counter-tool are mounted in their respective housing with means allowing their interchangeability or modification. 2 '54 -424 ô   of their cutting face, means being provided in the body of the frame and the tool holder to ensure balancing tools during   machine operation and lock in position.   -6 Machine according to claim 5 s, characterized in that the frame and the tool holder have at the right of the location cutting tools, openings for positioning   connecting screws (17), - blocks (31 33) for centering and balancing   liberation of efforts, and perpendicular openings and   for the positioning of the locking means motables.   -7 Machine according to claim 4, characterized in that the tool holder forming a double lever has a helical shape allowing, thanks to the clearance of the cutting tool, the advancement of the cable to be treated before cutting, and its   cutting, when the tool comes into contact with the cable.   -8 Machine according to claim 1, characterized in that it comprises in front of the increment sleeve and guiding   cable to the drive means, a ring (28) for   brage ensuring a dual function of control and security,   said ring cooperating according to its position, with means of con-   tact (33) ordering the starting or stopping of training cable.   -9 Machine according to claim 8, characterized in that said control ring is mounted to hinge relative   to the support element of the sheath and extends to its lower part.   upper leg (32) for cooperating with a contact   electromechanical system (33) in conjunction with the control of the   The machine according to claim 1, characterized in that control means of the electric cell type are arranged at the front of the machine and control the power unit.   driving the cable guide rollers in   the external appearance of said O cable