FR2694446A1 - Circuit breaker for power lines that can be operated using a pole on the ground. - Google Patents

Abstract

The present invention relates to a circuit breaker device characterized in that it comprises a housing (100) and a removable control drawer (300) which carries a circuit breaker member (400) and which is pivotally mounted on the housing (100), which drawer (300) has at its base a structure (340) capable of being gripped by the end of a handling pole and capable of subsequently allowing relative movement between the drawer (300) and said end of the pole so that after relative movement, the center of gravity of the drawer (300), previously placed above the attachment point of the drawer (300) on the end of the pole, is placed under it, to allow safe handling of said drawer (300) using the pole (500).

Description

The present invention relates to the field of circuit breaker devices

  for power lines, in particular circuit breakers comprising fuses and / or connection bars, intended to be fixed to the top of posts.

  Many cutting devices have already been proposed

  circuit intended to be fixed to the top of posts These devices are generally adapted to be actuated

  by poles handled by operators on the ground.

  The known circuit breaker devices for the top of posts are however quite complex. Furthermore, they do not always give satisfaction in terms of reliability and in terms of safety during

1 actuation.

  The object of the present invention is to improve

  known circuit breaker devices.

  This object is achieved according to the present invention thanks to a circuit breaker device comprising a box and a removable control drawer which carries a circuit breaker member and which is pivotally mounted on the box, which drawer has at its base a suitable structure. to be gripped by the end of a handling pole and able to subsequently authorize a relative movement between the drawer and said end of the pole so that after relative movement, the center of gravity of the drawer, previously placed above the point hooking the drawer on the end of the pole, is placed under it, to allow safe handling of said drawer using the

perch.

  According to another advantageous characteristic of the present invention, said structure provided at the base of the drawer comprises an elongated lumen capable of receiving a pin integral with the end of a pole and capable of allowing relative movement between the drawer and the pin so that after relative movement, the center of gravity of the drawer, previously placed above the pin, is placed under it, to allow manipulation

  securely from said drawer using the pole.

  According to another advantageous characteristic of the present invention, said light has the general shape of a keyhole comprising a large orifice adapted to receive the flared head of the pin provided at the end of the pole, which orifice opens into a elongated recess of smaller width capable of locking the head of the pin on the drawer while allowing relative movement between the pin and the drawer. Other characteristics, objects and advantages of the present invention will appear on reading the

  detailed description which will follow and next to

  attached drawings, given by way of nonlimiting example and in which: FIG. 1 represents a partially exploded side view of a circuit breaker device according to the present invention, FIG. 2 represents a second partially exploded side view of the same device circuit breaker according to the present invention, Figure 3 shows a side view of the single control drawer, Figure 4 shows a top view of the same control drawer, Figure 5 shows a schematic side view of the drawer and illustrates cooperation of the drawer with the circuit breaker and with the housing, FIGS. 6 and 7 represent two orthogonal views between them of an elastic element for locking the drawer, integral with the housing, FIG. 8 represents a side view, similar to the Figure 2, a contact member integrated in the housing, Figure 9 schematically shows the device according to the present invention in positi the drawer is pivoted vertically with respect to the box, and FIG. 10 schematically represents a side view

of a pole end.

  The circuit breaker device according to the present invention shown in the appended figures essentially comprises a box 100, two contact members

200 and a control drawer 300.

  The device shown in the appended figures has a general double symmetry with respect to two planes orthogonal to each other and respectively parallel to the planes of FIGS. 1 and 2 Hereinafter, the main plane of symmetry will be called the plane of symmetry parallel to FIG. 1, while we will call plane of symmetry

  secondary, the plane of symmetry parallel to Figure 2.

  The case 100 preferably comprises two

shells 110, 150.

  These shells 110, 150 are advantageously formed by molding of thermoplastic material

electrically insulating.

  The first shell 110 preferably comprises, in one piece, a vertical flange 112, an upper cover element 120 and two closure elements

  side 130, 140 which define the cable entries.

  The vertical flange 112 is generally plane and parallel to the main plane of symmetry. It supports several horizontal spacers 180, for example three horizontal spacers according to the particular embodiment shown in the appended figures. In addition, this flange 112 preferably comprises structures 114 capable of serve as an anchor for bolts 290 used for fixing the contacts 200 There are thus preferably provided four structures 114 for the anchoring of two

  bolts 290 for each of the contacts 200.

  Preferably, the structures 114 comprise housings capable of receiving the heads of the bolts 290 so that they do not protrude from the external surface of the flange 112. The upper covering element 120 extends perpendicular to the main plane of symmetry It completely covers the device. The covering element preferably comprises a flat, horizontal central section 122 framed on each side by an oblique face 124, 126 These oblique faces 124, 126 are inclined downward towards their free end, c is to say in

  distance from the central section 122.

  The central section 122 is provided in its center with a stud 128 of vertical axis, which emerges on its upper surface, to allow the device to be fixed on a support ferrule. It is thus possible to fix either a single circuit breaker device on the ferrule. in the case of a single-phase network, i.e. three circuit breaker devices in the case of a three-phase network, plus if necessary a device

  including a neutral connection bar.

  The two lateral closing elements 130, 140 are symmetrical with respect to the secondary plane of symmetry They extend perpendicular to the main plane of symmetry They each comprise a flat section

  upper 132, 142 inclined with respect to the vertical.

  These upper sections 132, 142 converge towards the secondary plane of symmetry in the direction of the ground. They are each provided with a through orifice 134, 144, with axes 135, 145, serving as cable entry. Furthermore, these upper sections 132, 142 are placed under the oblique sections 124, 126 of the covering element 120, that is to say set back from the free edges 125, 127 of these. It will be noted that thanks to the inclination of the upper planes 132, 142, and therefore axes 135, 145, the cables are directed downwards away from the housing 100. Thanks to this arrangement, the drops of water possibly recovered by the cables flow away from the housing 100 and

  not in comparison with this one.

  Preferably the two lateral closure elements 130, 140 comprise, at their base under the upper sections 132, 142, different sections which

  converge to the secondary plane of symmetry.

  The second shell 150 essentially comprises a vertical flange 152, symmetrical with the flange 112 by

  relation to the main plane of symmetry.

  The shell 150 is removable, it is fixed to the spacers 180 by any appropriate means, for example using nuts fixed to the threaded ends of the spacers 180. For this, the flange 152 must have holes placed opposite the

spacers 180.

  Of course the housing 100 can be the subject of various variant embodiments. For example as a variant, it is possible to consider dividing each of the two closing elements 130, 140 into two parts, at the level of the main plane of symmetry, which two parts are respectively linked, by molding, to the flanges 112 and 152 of the shells 110 and 150, as shown in FIG. 2, in which the joint plane between these two

parts is referenced 170.

  The box 100 houses two contacts 200 One of these contacts 200 is shown in FIG. 8 The two contacts 200 are identical They are symmetrical by

  relation to the secondary plane of symmetry.

  Each contact 200 comprises a straight and vertical main arm 210, which extends practically over the entire height of the housing 100 The main arm 210 is adjacent to the flange 112 and fixed thereon using

  of nuts 292 engaged on the aforementioned bolts 290.

  The main arm 210 is extended at its upper end by a horizontal arm 212 directed towards the shell 150 This arm 212 is itself extended by a vertical arm 214 The latter has a height much less than that of the main arm 210 The arm 214 is finally provided at its lower end with a support arm

  horizontal 216 directed towards the shell 150.

  The arm 216 serves to support a clamp 220 sub-

  underlying. The clamp 220 is fixed to the support arm 216 by any suitable known means, for example as shown in the appended figures by a bolt 230 and

an associated nut 232.

  Each clamp 220 has two branches 222, 224 generally vertical symmetrical with respect to a vertical plane parallel to the main plane of symmetry More precisely the two branches 222, 224 converge one

towards each other towards the ground.

  Preferably each branch 222, 224 has at its lower end an engagement edge 223, 225 inclined outward to facilitate the engagement of a knife 402 of the circuit breaker member 400 in the clamp 200. The arm vertical 214 is provided with a bolt 280 and a nut 282 with a horizontal axis making it possible to tighten the end of a cable coming from an input 134, 144 on the corresponding contact 200 To operate this connection between the contacts 200 and cables, it is of course necessary to remove the removable flange 152 beforehand and to put it back in place once the connection has been made. The drawer 300 extends essentially horizontally in the position of use, as

shown in figure 1.

  It has a generally rectangular contour adapted to close the housing 100 at its base. In other words, the geometry of the drawer is adapted to the opening contour defined by the base of the flanges 112 and 152 and

  by the lateral closure elements 130 and 140.

  The drawer 300 is essentially formed by a lower base wall 330 surmounted on its upper surface by four walls 331, 332, 333, and 334 which are orthogonal to it and are respectively parallel and

perpendicular two by two.

  The drawer 300 is adapted to receive a circuit breaker 400, such as a fuse for a phase line or even a connection strip for the line

neutral.

  In a manner known per se, each cutter

  circuit 400 includes two knives 402 adapted to be engaged in a clamp 220 to ensure the connection between

the two cables.

  More specifically, the circuit breaker members 400 generally comprise cutouts 404 of essentially circular shape with converging edges, which open laterally on the knives 402. These cutouts 404 are generally provided to allow the circuit breaker members 400 to be fixed using a screw / nut system

on a threaded support.

  Preferably in the context of the present invention, the drawer 300 is provided with two fingers 302 projecting upwards on its upper surface 304 These fingers 302 are adapted to penetrate into the cutouts 404 They thus define a particularly maintenance

  stable circuit breaker 400 on the drawer 300.

  They also serve as a key for the cut-off members

  circuit 400 by imposing a unique position of these on the drawer 300, position in which the knives 402 are vertical and can therefore penetrate the

  clips 220 respectively associated.

  Preferably, the drawer 300 and in particular the fingers 302 are adapted to receive fuses or

  terminal blocks of different sizes or geometry.

  The drawer 300 is articulated on the housing 100 around a horizontal axis 310 This axis 310 is external to the housing 100 It extends perpendicular to the main plane of symmetry The axis 310 is adjacent to the base of the housing 100 and covered by the cover element 120

  thanks to the convergent shape of the base of the case 100.

  Preferably the axis 310 is defined by two hooked fittings 270, with concavity directed upwards, fixed to the external surface of one of the elements of

closure 140.

  One of the side walls 334 of the drawer 300 is provided with two parallel fittings 320 and 322 which each carry a pin 321 and 323 The pins 321 and 323 are coaxial and centered on an axis 324 which coincides in use with the axis 310, when the pins 321

  and 323 are based respectively on one of the fittings 270.

  The drawer 300 is further provided on its lower surface 306 with a handle 340 adapted to allow manipulation of the drawer 300 from the ground in complete safety. The handle 340 is composed of a vertical flat plate 344 The plate 344 is parallel to the main plane of symmetry It includes a through-hole 346 in its thickness The light 346 has the general shape of a keyhole comprising a large orifice 348 adapted to receive the flared head 504 of the pin 502 provided at the end of the pole 500 (see FIG. 10), which orifice 348 opens into an elongated recess 350 of narrower width capable of locking the head 504 of the pin 502 on the drawer 300 while allowing relative movement between the pin 502 and the drawer 300 in the direction of elongation of the recess 350 The recess 350 is substantially radial relative to the axis of the orifice 348 Furthermore, this recess 350 is substantially radial with respect to the hinge pin 310 of the drawer 300 on the housing 100 In the locked rest position on the housing 100, as shown in FIG. 1 attached, the recess 350 is inclined by approximately with respect to the horizontal It rises in the direction of its free end opposite to the orifice 348 Preferably the inclination of the recess 350 on the horizontal is adapted so that this recess 350 is substantially vertical when the drawer 300 is suspended by the pins 321, 322 on the fittings 270, as shown

in figure 9.

  In other words, the orifice 348 has a diameter complementary to the diameter of the head 504 of the pin 502 of the pole 500, while the recess 350 has a width

  complementary to the diameter of the pin 502 of the pole 500.

  Preferably the pin 502 has its axis 506 orthogonal to the pole, that is to say that it extends horizontally over the

  pole when it is vertical.

  Recess 350 has two main walls

parallels 351 and 352.

  The handle 340 can be fixed by any means

  on the bottom surface of drawer 300.

  The handle 340 has a small amplitude

  vertical to limit the size of the device.

  Therefore, the orifice 348 is placed clearly in

  below the center of gravity of drawer 300 when it

  this is locked in the horizontal position of use on the housing 100, as shown in FIG. 1 However, when the drawer 300 is placed in a general vertical position suspended by the pins 321 and 323 on the fittings 270, as shown in FIG. 2 , and that the pin 502 of the pole 500 has been moved to the bottom of the recess 350, the center of gravity of the drawer 300 is at

  opposite placed below the pawn 502 of the pole 500.

  Thus, when the pin 502 of the pole 500 is engaged in the orifice 348, the drawer 300 is in unstable equilibrium relative to the pin 502 of the pole 500, since its center of gravity is placed above the pin 502 A at this stage the drawer 300 is however kept in a stable position thanks to the cooperation defined between the pins

321, 323 and supports 270.

  The drawer 300 can therefore easily be pivoted downwards by rotation about the axis 310, by pulling on the pole 500 The orifice 348 being distant from the axis 310 on

  obtains a significant torque.

  And once the drawer 300 brought into a vertical position suspended by the pins 321 and 323 as shown in FIG. 2, and the pin 502 moved towards the bottom of the recess 348, the center of gravity of the drawer 300 is placed below the pin 502 The drawer 300 then occupies a stable position relative to the pin 502 The drawer 300 can then be easily handled by the pole 500 from the ground In particular, the drawer 300 can be lifted to release the pins 321 and 323 from the supports 270 to release the drawer 300 and brought it to the ground, for example for a change of fuse 400 Indeed during this manipulation, the fuse or the

  bar 400 remains held on drawer 300.

  Those skilled in the art will understand on examining the appended figures that, thanks to the features of the present invention, the drawer 300 can easily be manipulated from the ground, using a pole 500, without risk of interference with cables In this respect, the device according to the present invention has an advantage

  notable compared to known prior devices.

  The drawer 300 can be blocked on the housing 100 by any suitable means. The clamping force of the pliers 220 on the knives 402 of the circuit breaker member 400 it participates in this blocking. However, additional blocking means are preferably provided, such as that for example as shown in Figures 6 and 7 and as shown schematically in Figure 5, elastic blades 160 generally vertical integral with the housing 100 at the base thereof and provided with stamped protrusions 162 adapted to penetrate into a cavity formed in a wall 332 of the drawer 300 to block the latter The wall 332 of the drawer 300 receiving the protrusion 162 is that opposite to

  the wall 334 carrying the fittings 320 and 322.

  As can be seen in FIG. 1, preferably the main arm 210 of each of the contact members 200 is provided at its lower end with a cutout 211 which

opens axially downwards.

  Furthermore, the equipment according to the present invention preferably comprises a cover made of electrically insulating material capable of being engaged at the base of an arm 210, in one of the cutouts 211, after removal of the

drawer 300.

  The equipment according to the present invention also comprises a grounding cable capable of being screwed, using a pole manipulated from the ground, to the base of the other arm 210 in the cutout 211

  after removing drawer 300.

  Thus in the event of intervention on a line, the operator firstly removes the drawer 300 using a pole, to isolate the section of line on which it must intervene, then the operator places the aforementioned cover. on the basis of the contact 200 linked to the section of line remaining energized and places the aforementioned cable on the basis of the other contact 200 linked to the section on which it

  intervenes to earth this section of line.

  If necessary, an auxiliary drawer similar to the drawer 300 shown in the appended figures described above can be provided, namely comprising articulation means on the housing 100 and an operating handle 340 comprising a light 346 for being manipulated when using a pole 500 from the ground, which auxiliary drawer, however, has an electrically insulating cover capable of covering the base of one of the contacts 200, as well as a clamp connected to a grounding cable and designed to be engaged on the basis of the other contact 200 Such an auxiliary drawer allows the installation in a single operation of the insulating cover and the earthing assembly with the same

  advantages than those previously described.

  Of course, the present invention is not limited to the particular embodiment which has just been described, but extends to all variants conforming to

his mind.

Claims (4)

R E V E N D I C A T I O N S   1. Circuit breaker characterized in that it comprises a housing (100) and a removable control drawer (300) which carries a circuit breaker member (400) and which is pivotally mounted on the housing (100) , which drawer (300) has at its base a structure (340) capable of being grasped by the end (502, 504) of a handling pole (500) and capable of subsequently authorizing relative movement between the drawer (300 ) and said end of the pole (500) so that after relative displacement, the center of gravity of the drawer (300), previously placed above the point of attachment of the drawer (300) on the end of the pole 500) , is placed under it, to authorize a manipulation in any   safety of said drawer (300) using the pole (500).   2. circuit breaker device according to claim 1 characterized in that said structure provided at the base of the drawer (300) comprises an elongated lumen (346) capable of receiving a pin (502) secured to the end of a pole (500) and capable of allowing relative movement between the drawer (300) and the pin (502) so that after relative movement, the center of gravity of the drawer (300), previously placed above the pin (502), either placed under it, to allow safe handling of said drawer (300) using of the pole (500).   3. circuit breaker device according to claim 2 characterized in that said light (346) has the general shape of a keyhole comprising a large orifice (348) adapted to receive the flared head (504) of the pin (502) provided at the end of the pole (500), which orifice (348) opens into an elongated recess (350) of smaller width capable of locking the head (504) of the pin (502) on the drawer (300 ) while allowing relative movement between the pin (502) and the drawer (300).   4. circuit breaker device according to claim 3 characterized in that the recess (350) is generally vertical in the suspended position of the drawer (300) on the pivot axis (310).   Circuit breaker device according to one of the   Claims 1 to 4, characterized in that it   comprises a housing (100) composed of two shells (110, 150) formed by molding of thermoplastic material electrically insulating.   6 Circuit breaker device according to one of   Claims 1 to 5, characterized in that the   housing (100) includes a removable side flange (152).   7 Circuit breaker device according to one of   Claims 1 to 6, characterized in that the   housing (100) comprises on its upper wall (120) a stud (128) adapted to allow the device to be fixed   circuit breaker on a support ferrule.   8 Circuit breaker device according to one of   Claims 1 to 7, characterized in that the   housing (100) comprises two side walls (130, 140) defining cable entries (134, 144), which are inclined relative to the vertical, near the center of the device, downwards, so that the cables are directed downwards away from the housing (100) and that any drops of water possibly collected by the cables flow away from the housing (100) and not point closer to it.   9 Circuit breaker device according to one of the   Claims 1 to 8, characterized in that the   cable entries (134, 144) are placed under the element   upper cover (120) of the housing (100).   Circuit breaker device according to one of the   Claims 1 to 9, characterized in that the   housing (100) houses two contacts (200) designed to be   connected respectively to one of the two cables.   11 circuit breaker device according to claim 10, characterized in that each contact (200) is fixed on a clamp (220) capable of receiving   a knife provided on a circuit breaker.   12 Circuit breaker device according to one of   Claims 1 to 11, characterized in that the   drawer (300) comprises at least one finger (302) projecting upwards on its upper surface, capable of penetrating a cutout (404) formed in a knife of the organ circuit breaker (400).   13 Circuit breaker device according to one of   claims 1 to 12, characterized in that it   comprises elastic blades integral with the housing capable of holding the drawer (300) in the position of use by snap-fastening. 14 Circuit breaker device according to one of   Claims 1 to 13, characterized in that   the circuit breaker is of the fuse or strip type connection (400).   Circuit breaker device according to one of the   claims 1 to 14, characterized in that it   further includes a cover of electrically insulating material capable of being engaged at the base of one of the contacts   (200) after removing the drawer (300).   16 Circuit breaker device according to one of   Claims 1 to 15, characterized in that it   further includes a pair setting cable capable of being connected to one of the contacts, after removal of the drawer (300).   17 Circuit breaker device according to one of   Claims 1 to 16, characterized in that it   further comprises an auxiliary drawer comprising articulation means on the housing (100) and an operating structure (340) similar to that of the main drawer (300) to be manipulated using a pole (500) to from the ground, which auxiliary drawer also has an electrically insulating cover capable of covering the base of one of the contacts (200), as well as a connected clamp   to a grounding cable and designed to be engaged on the basis of the other contact (200).