FR2642577A1 - Support for intervention work on overhead power line fittings (bracing) - Google Patents

Abstract

The invention relates to a support for intervention work on overhead power line fittings (bracing). According to the invention, the support essentially consists of a support portion 2 and of a fixing portion 3 forming a rigid assembly having the general shape of a T. The fixing portion 3 includes a strapping means 4 with a view to fixing to the tower (pole) in question of the overhead line, in such a way that the latter is pressed up against the tower (pole), and that the support portion 2 extends horizontally on either side of the said tower (pole) and enables one or two operators to be positioned thereat in order to carry out work on the fittings (bracing) of the said overhead line. Application especially to the rapid repair by intervention work on the bracing of an overhead line.

Description

 The invention relates to the positioning of operators. or assemblers during interventions on overhead electric lines equipped with armaments, and in particular armaments of large dimensions such as vault, anchor cross, etc ...

 Different systems are used for this purpose to ensure the positioning of an operator during such interventions.

First there are the vehicle-mounted lifts. This is a relatively restrictive system, and more restrictive. Indeed,
the elevator does not allow simultaneous access to both ends of the armament. In addition, it only allows interventions on lines along road or stone roads. In the
In practice, such a system is generally not used during troubleshooting.
immediate and / or rapid search for a defect, notably because of the fact that the agent must hold a special permit (which
is not always the case during the penalty).

Other systems have therefore been proposed, based on a
structure that must be assembled and mounted on site.

We thus find vault-ladder type systems. Such a vault-ladder ladder, which must be assembled at the top of the support of
line concerned, is generally composed of three to five separate elements,
for example three axes and a fixing frame. In this case, it is imperative
to use a train of interlocking ladders. which implies a time
implementation, so that in practice this system is not used for short-term work.This system also
other disadvantages inherent to its very structure: the ladder train
must be positioned against one side of the support (and not on a
angle), which causes the agent an unpleasant impression of instability
lity, further accentuated by the different assemblies, and what limits
also the interventions to particular supports (the supports
cylindrical or cylindro-conical do not lend themselves to such use). Of
more, once mounted, this system allows the positioning of a single agent,
which can only reach one end of the armament. This system is finally relatively bulky. so it does not appear
in traditional equipment of first intervention vehicles.

 There are also platform type systems. Such a platform is heavy (twenty pounds for example) and cumbersome. This is a major handicap for its transport on sites that are easily accessible or not accessible at all to the vehicles.

This type of platform is traditionally made up of two elements, about ten kilos each, which must be assembled at the top of the line support. so that setting up is long and difficult. In addition, the support surface remains limited once the platform is mounted, so that only one agent can be positioned. and that he does not have access to both simultaneously. ends of the armament.

In practice. because of the sheer weight of such

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The purpose of the invention is, in particular, to provide support
interenion which is easily transportable and cost of manufacture
modest. and whose reduced size makes possible easy equipment
vesicles first intervention.

The object of the invention is also to provide a support
intervention that can be easily put in place, and which, once put in place. allow a fitter or even two fitters to position themselves there,
and have simultaneous access to both ends of the armament.

It is more particularly a support of intervention on
armament of overhead power line. characterized by the fact that it is
essentially consists of a support portion and a fixing portion forming a rigid assembly having the general shape of a T, the fixing portion comprising a strap means for attachment to the relevant pole of the airline such that said portion is pressed against said post, and that the support portion extends horizontally on either side of said post and allows one or two operators to position themselves to intervene on the armament of said airline
Preferably. the fixing portion is a beam member formed of two longitudinal wings, one wing carries the strap means to be pressed against the pole concerned, the other wing serving essentially guide. In particular, the fixing portion is an L-beam element whose two wings are substantially perpendicular to each other. and this portion is constituted by a folded aluminum sheet, preferably with a folding angle of the order of 90.

 Advantageously in addition, the strap means is essentially constituted by at least one assembly comprising a strap and a ratchet tensioner in particular, the strap means comprises a plate fixed by bolting or the like on the fixing portion, so as to be able to be easily replaced.

 According to a preferred embodiment, the support portion is a beam member formed of two longitudinal wings, one wing is secured to the fixing portion. the other wing serving as a working path for the operator or operators positioned on it.

 Preferably then, the support portion is an element. L-beam, whose two wings are substantially perpendicular to each other J in particular, the support portion is constituted by a striated and folded aluminum sheet, preferably with a folding angle of the order of 900.

 It is also advantageous to provide that the support portion comprises an anti-torsion reinforcing wing, extending longitudinally joining the free edges of the two flanges of the beam member preferably then. the reinforcing and anti-torsion wing is electrically welded to the beam element. so that said beam member constitutes a hollow section of triangular section.

 It is advantageous that the wing of the support portion forming the working path comprises a plurality of stoppers; in particular, two end stops L-shaped are provided at the ends of the support portion, being preferably welded on it the other stoppers being simple welded bars.

It is also interesting that the wing of the support portion which is secured to the fastening portion has a plate parallel to this wing, preferably welded, and projecting therefrom a distance corresponding to the thickness of the fixing portion, to form a complementary support surface
Also preferably, the support portion is equipped with rings intended to facilitate its implementation: in particular, the support portion comprises a central ring disposed in a vertical plane passing through the center of gravity of the intervention support, and two end rings possibly equipped with carabiners.

 It is finally advantageous to provide that the attachment and support portions are welded together.

Other features and advantages of the invention will emerge more clearly from the following description and the accompanying drawings, relating to a particular embodiment, with reference to the figures where iigr; re 1 is a bottom view of a support intervention according to
the invention. face-up representing the working path for the
the operators positioned on said support (the strapping means is not
not visible here) - Figure 2 is an elevational view of the intervention support of the figure
I, making it possible to better distinguish the fixing portion and the portion of
support the constituent; FIG. 3 is a section along III-III of FIG.
distinguish the triangular section of the support portion, as well as the
central hook equipping the support intervention - Figure 4 is a detail of the end of the previous support, with a
view according to the flexure IV of FIG. 2 - FIG. 5 is a perspective view of the intervention support
previous, equipped with his -moyen of strapping (the straps neatly
said are hidden) - Figure 6 is an enlarged detail of the same support
of intervention, illustrating the means of strapping used, the handle-lever
pivotable at an angle of about 1800 - Figure 7 is a perspective view illustrating the support for intervention
mounted on a traditional airline support pole (on
distinguishes in particular end hooks equipped with carabiners
to facilitate the installation and disassembly of the intervention support); FIGS. S and 9 are schematic views respectively illustrating
the intervention of an agent on an arming end, and the position
two agents on the same support.

 Figures 1 to 6 illustrate an advantageous embodiment of an intervention support according to the invention. The intermediate support l consists essentially of a support portion 2 and a fixing portion 3 forming a rigid assembly having the general shape of a T. In addition, the fixing portion 3 comprises a means webbing 4 (not shown in the views of Figures 1 and 2) for attachment to the concerned pole of the overhead line (such a pole has been shown in Figures 7 to 9. and referenced 5). such that the fixing portion 3 is pressed against said post. and that the support portion 2 extends horizontally on either side of said post and allows one or two operators to position themselves to intervene on the armament of the airline.

 Thanks to such a structure, it therefore appears possible to provide intervention support significantly more efficient than known systems, and in particular having significant advantages in terms of its weight, its size, and its potential for use. It is particularly easy to see that by providing a support portion 2 of a length of about two meters, it becomes easy for an agent to simultaneously reach the two ends of the weapon concerned without any other manipulation than the only setting. in place of the intervention support. Thanks to the structure of this support intervention, it is also possible that two agents can simultaneously be positioned, which did not allow existing systems, unless you provide heavy and bulky platforms. it is advantageous to ensure that the fixing portion 3 and the support portion 2 form a single one-piece assembly, which avoids any loss of any element, and considerably facilitates the transport of the support for the intervention: in practice, support portions 2 and fixa. 3 are advantageously welded together, but it could natbrely provide a set of two portions fixed together by bubbling.

 However, it is necessary to organize the structure of the support of the invention 1 so that its weight remains low, but its mechanical strength is sufficient to allow any type of intervention with one or two operators. Such an intervention support - being more particularly intended for repair teams where it is often called. In these methods, which are more or less empirical, the said intervention support pyrenates all its place in the collective tooling because of its low weight. its small size. its low price. its ease of setting up. and its poor rarity of use. the possibility of working with two agenTs. with optimal stability and comfort, such intervention support is ideally suited for both short and long-term work. Such flexibility of use is extremely advantageous in the technical field considered, and predestines the support of intervention as well to the local districts as to the companies of construction of lines.

More particularly, the fixing portion 3 is preferably made according to a beam member formed of two longitudinal wings 3 '. 3 ", a wing 3 'carries the strapping means 4 to be pressed against the pole concerned 5, the other wing 3" serving for its essentially guiding. The intervention support illustrated in the figures comprises a fixing portion 3 made according to an element of
L-beam, whose two wings 3 ', 3 "are essentially perpendicular
they are mad. Providing an L-shaped beam element allows
easily accommodate all types of posts whose section
right is quadrangular, but does not exclude support posts
cylindrical or cylindro-conical.A simple structure is obtained
and robust by providing a fixing portion 3 constituted by a sheet
folded aluminum, preferably with a folding angle of the order of 900.

In FIG. 2, it can be seen that the wing 3 'of the portion of
3 shows two sets of holes 13: these holes serve to
Removably attach two sets of webbing that will be described
further. so that the strap means used can be easily
replaced. as a simple wear product. The aluminum foil constituting the fixing portion 3 will naturally have to present a
sufficient thickness to impart adequate mechanical rigidity (a
thickness of the order of 6 mm will generally prove sufficient).

The strap means 4, illustrated in FIGS. 5 to 7, is here
planned in duplicate: this is of course only an example. The way
of webbing used may be of conventional design, being constituted
by an assembly comprising a strap 21 and a ratchet tensioner 22.Si
we refer to the detail of Figure 6, we distinguish the structure
particular of a ratchet tensioner 22 which is particularly suitable for
This type of use concerns: this ratchet tensioner has in effect a
plate 23, secured for example by bolting to the wing 3 'of the portion
3, a lever handle 24 articulating with an axis 25 on said
platinum. and a double pawl 26. The shaft 25 has a longitudinal slot
(not possible in the figure) in which may be inserted the free end
of the strap 21-concerned, the tension being then obtained by printing
successive pivoting movements to the lever handle 24, up to
obtaining the desired tension stress. To clear the stowage, simply
raise the lever handle 24 to 18Q, and pull the safety catch
ratchets 26, and the strap 21 then relaxes itself. Way to
webbing 4 thus described corresponds to a marketed docking system
under the name COBALTIX, simplex type: this system uses polyester straps width 5C mm and whose breaking force is 5 00C kilos. It goes without saying, however, that any other type of equivalent tensioning mechanism can be used. In Fig. 6, the lever handle 24 is shown in the closed position for the upper webbing assembly, and in the open position for the lower webbing assembly.

 The support portion 2 is preferably in turn constituted according to a beam member formed of two longitudinal wings 2 ', 2 ", a wing 2" of which is secured to the fixing portion 3 (preferably by welding), the another wing 2 'serving as a working path for the operator or operators positioned on the intervention support. Preferably, the support portion 2 is an L-shaped beam element, the two of which are comfortable 2 and 2 "are essentially perpendicular between The simple way to make such a support portion consists in providing a beam element consisting of a striated and folded aluminum sheet, preferably with a folding angle of the order of 90.degree. the figure a makes it possible to distinguish such a striated zone. It is also advantageous to provide that the support portion 2 comprises an additional anti-torsion reinforcing wing 6, extending longitudinally and anointing the free edges of the two wings 2 ', 2 "of the beam member.

In artiajlier. this reinforcing and anti-torsion wing 6 will be electrically welded to the beam element. so as to form a reux section of triangular section.

 The structure which has just been described makes it possible to provide intervention support that is both rigid and lightweight: for a length of the order of 2 meters, the intervention support will have a weight of the order of iC kg. which allows an agent to carry it easily over the shoulder. effortlessly. making it possible to access the most difficult places whatever the terrain configuration, which represents a considerable improvement over the known systems.

 In order to improve the working comfort for the agent or agents positioned on the intervention support, it is advantageous to provide that the wing 2 'of the support portion 2 forming a working path comprises a plurality of stoppers 7 8. In the present case, there are two L-shaped end stops 8 provided at the ends of the support portion 2, preferably being welded thereto, and a series of stoppers 7 made under the form of simple bars welded to said support portion.

 Furthermore, the flange 2 "of the support portion 2 which is secured to the fastening portion 3 here has a plate 12 parallel to this flange, preferably welded thereto, and projecting from the plane of said flange. a distance corresponding to the thickness of the fixing portion 3, so as to constitute a complementary bearing surface, this plate 12 thus allows a thickness compensation when it is a quadrangular shaped post. that the concrete post 5 illustrated in Figures 7 to 9, but can also improve the attachment of the intervention support in case of mounting on a cylindrical column or cylindro-conical wooden.

 Finally, it is advantageous to equip the support portion 2 with a plurality of rings intended to facilitate the placement of the intervention support I. Thus, in the figures, there is a central ring 9 disposed in a vertical plane. passing through the center of gravity of the intervention support i, as well as two end-fins 10, arranged in the plane of the wing 2 "forming working path and possibly equipped with carabiners 11 (these carabiners n ' have been shown only in Figures 7 to 9).

 The aforementioned rings allow easy implementation of the intervention support as will be described below. The intervention support 1 is brought to the foot of the concerned pole, and the strap or straps 21 of the webbing means are unwound and separated. The fitter then remotely hangs a service rope pulley at a fixed point, with the aid of a pole hooked at the top of the pole, and a ground agent hooks the service rope to the central ring 9 while passing this rope in one or other of the carabiners 11 connected to an end hook 10.It is then easy for the ground agent to hoist the intervention support parallel to the post, and the editor, which is ready to receive said support, provides no effort; when the support arrives at its level, the fitter releases the rope of the carabiner He concerned, so that the intervention support is retained only by its central ring, said support being balanced by itself in a horizontal position due to positioning said central ring. The fitter then has only to ensure the guidance of the intervention support, which is maintained at the desired height by the agent on the ground while the editor fixed said support using the straps and ratchet tensioners. Once the system is in place, the hook of the service rope can be released from the central ring, and can thus be used for raising the tools necessary for the intervention. The editor can then position himself on the support of intervention, by using his lanyard and his rope of subjection, being understood that in no case the svsveme does not exempt to be attached at any time. A second fitter can now be positioned on the intervention support, as shown in FIG. 9, in which the fastener rope 5r of each fitter is shown. The fitter effortlessly reaches the end of the armament. 155. as shown in Figure 8, and he can undertake the work entrusted to him in a comfortable and safe position.

 Once the work is completed, the fitter hooks the intervention support by the central ring 9 to the service line, then the agent to the self resumes the tension of the service line while the fitter webs the system. The agent on the ground then initiates the descent of the support dlintersen.on. while the fitter releases the support of the post. The editor at the passage hooks the service rope in one of the carabiners 11. This allows a controlled descent of the intervention support avoiding swings or oscillations that could be dangerous.

 Figure 7 illustrates the intervention support i set up on a pole 5, in position ready to receive one or two editors.

The intervention support which has just been described has a large number of advantages over known systems. -
Its weight is modest (about ten kilos) so that a single agent can carry it on the shoulder without effort, and access the most difficult places regardless of the terrain configuration. Its constitution according to a one-piece assembly is advantageous insofar as no element can be lost, the intervention support makes it possible, by its dimensioning, to simultaneously reach the two ends of the armament without any other manipulations than that necessary for its installation. , which considerably facilitates the intervention of operators, being further reminded that two agents can position themselves on the support of intervention.

The installation of the support of intervention is done easily, and
the fitter has no particular effort to exert during this installation, said support being maintained by the agent on the ground with the aid of a service rope; the fitter has only to fix the support on the post, putting in place the webbing, which can be done easily and without any particular tool.

The attachment of the intervention support to the post is thus fast and safe, and allows to be applied to all types of posts. For maintenance. it suffices to monitor the state of the strapping means to have an efficient intervention support and always in good condition, the straps themselves being the only vulnerable parts of said support and can be easily replaced, and at a lower price. The structure of the intervention support finally makes it possible to achieve a set of modest cost. this support being durable, especially when it consists of
welded aluminum plates. which has the advantage of avoiding corrosion by
external agents.

 The intervention support thus has a large number of advantages over the known systems mentioned above.

The invention is not limited to the embodiment which has just been described, but on the contrary covers any variant with
equivalent means, the essential features set out in the claims.

Claims (12)

1. Support for intervention on overhead power line armament, characterized in that it consists essentially of a support portion (2) and a fixing portion (3) forming a rigid assembly having the shape general of a T, the fixing portion (3) comprising a strap means (4) for attachment to the relevant pole of the overhead line so that said portion is pressed against said pole. and that the support portion (2) extends horizontally on either side of said post and allows one or two operators to position themselves therein to intervene on the arming of said overhead line 2.Support of intervention according to Claim I, characterized in that the fixing portion (3) is a beam member formed with two longitudinal wings (3 ', 3 "), one wing (3') of which carries the tensioning means (W) for to be pressed against the concerned pole, the other wing (3 ") serving essentially as guide.  3. Intervention support according to claim 2, characterized in that the fixing portion (3) is an L-beam member, the two wings (3 ', 3 ") are substantially perpendicular to each other.  LL interventional support according to one of claims 2 and 3, characterized in that the securing portion (3) is constituted by a folded aluminum foil. preferably with a folding angle of the order of 9  5. Intervention support according to one of claims 1 to 4, characterized in that the strapping means (4) consists essentially of at least one set comprising a strap (21) and a ratchet (22). ) ..  6. Intervention support according to claim 5, characterized in that the strapping means (4) comprises a plate (23) fixed by bolting or the like on the fixing portion (3), so as to be easily replaced .  7. Intervention support according to one of claims 1 to 6, characterized in that the support portion (2) is a beam member formed of two longitudinal wings (2 ', 2 "), including a wing ( 2 ") is secured to the fixing portion (3), the other wing (2 ') serving as a working path for the operator or operators positioned on it.  8. Intervention support according to claim 7, characterized in that the support portion (2) is a beam member. L, whose two wings (2 ', 2 ") are substantially perpendicular to each other.  9. Intervention support according to claim 8, characterized in that the beam element forming the support portion (2) is constituted by a striated and folded aluminum sheet. preferably with a folding angle of the order of 900.  10. Intervention support according to one of claims 8 and 9, caractéri-se in that the support portion (2) comprises an anti-torsion reinforcing wing (6). extending longitudinally and joining the free edges of the two flanges (2 ', 2 ") of the beam member.  He. Intervention support according to claim 10, characterized in that the reinforcing and anti-torsion wing (6) is electrically welded to the beam element. so that said beam member constitutes a hollow section of triangular section.  12. Intervention support according to one of claims 7 to 11, characterized in that the flange (2 ') of the support portion (2) forming a working path comprises a plurality of stoppers (7, 8 ).  13. Intervention support according to claim 12, characterized in that two end stops (8) L-shaped are provided at the ends of the support portion (2), preferably being welded to it. ci, the other stops (7) being simple welded bars.  14. Intervention support according to one of claims 7 to 13, characterized in that the flange (2 ") of the support portion (2) which is secured to the fixing portion (3) has a plate (12) parallel to said wing, preferably welded, and projecting therefrom by a distance corresponding to the thickness of the fixing portion (3), to form a complementary bearing surface.  15. Intervention support according to one of claims 7 to 14, characterized in that the support portion (2) is equipped with rings (9, 15) to facilitate its implementation.  16. Intervention support according to claim 15, characterized in that the support portion (2) comprises a central ring (9) disposed in a vertical plane passing through the center of gravity of the intervention support. and two end rings (10) optionally equipped with carabiners (11).  17. ~ Intervention support according to one of claims I to 16, characterized in that the fastening portions (3) and support (2) are welded together.