FR2691300A1 - Mechanism for raising cross-arm on wooden electric power pole - uses cap clamped to top of pole to support pulleys that carry cable that is operated by lever to raise cross-arm - Google Patents
Mechanism for raising cross-arm on wooden electric power pole - uses cap clamped to top of pole to support pulleys that carry cable that is operated by lever to raise cross-arm Download PDFInfo
- Publication number
- FR2691300A1 FR2691300A1 FR9205734A FR9205734A FR2691300A1 FR 2691300 A1 FR2691300 A1 FR 2691300A1 FR 9205734 A FR9205734 A FR 9205734A FR 9205734 A FR9205734 A FR 9205734A FR 2691300 A1 FR2691300 A1 FR 2691300A1
- Authority
- FR
- France
- Prior art keywords
- pole
- cable
- arm
- cross
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
Description
DISPOSITIF ELEVATEUR D'UNE ARMATURE DE SUPPORT
DE LIGNES ELECTRIQUES SUR UN POTEAU EN BOIS
DESCRIPTION
L'invention concerne un dispositif élévateur
d'une armature de support de lignes électriques sur un poteau en bois.DEVICE FOR LIFTING A SUPPORT FRAME
OF ELECTRIC LINES ON A WOOD POST
DESCRIPTION
The invention relates to a lifting device
a support frame for power lines on a wooden pole.
Ces armatures consistent en des poutrelles solidaires de colliers de soutien enfilés et serrés autour du sommet des poteaux. Mais un rétrécissement des poteaux est observé avec le vieillissement du bois, ce qui fait que Les colliers glissent peu à peu et que les armatures s'affaissent sous le poids des lignes électriques, qui peuvent finalement toucher le sommet du poteau ou des objets voisins tels que des branches d'arbre ; des pertes électriques sont produites et des dangers sont occasionnés) notamment par temps de pluie. These frames consist of beams integral with support collars threaded and tightened around the top of the posts. But a shrinking of the posts is observed with the aging of the wood, which means that the collars slide little by little and that the frames collapse under the weight of the power lines, which can finally touch the top of the post or neighboring objects such as only tree branches; electrical losses are produced and dangers are caused) especially in rainy weather.
Le relevage des armatures et des lignes est traditionnellement fait sans outillage adapté et dans des conditions incommodes puisque l'opérateur est au sormet d'une échelle ou d'un engin analogue. Il doit exercer une grande force musculaire en soulevant les armatures, ce qui implique normalement que certaines des lignes doivent en être détachées. Ces lignes sont ensuite soulevées à leur tour et raccrochées à
L'armature, mais toutes ces opérations prennent du temps.The lifting of reinforcements and lines is traditionally done without suitable tools and in inconvenient conditions since the operator is on the sormet of a ladder or similar device. It must exert great muscular force by lifting the reinforcements, which normally implies that some of the lines must be detached. These lines are then lifted in turn and hung up on
The frame, but all these operations take time.
L'objectif essentiel de l'invention est de souLager la tâche de l'opérateur en lui permettant de travaiLler de manière plus confortable et avec une dépense d'énergie physique moindre, sans qu'il soit nécessaire de démonter certaines des lignes. The essential objective of the invention is to ease the task of the operator by allowing him to work more comfortably and with less expenditure of physical energy, without it being necessary to dismantle some of the lines.
On utilise pour cela un outil caractérisé en ce qu'il comprend un chapeau supérieur à poser au sommet du poteau, un câble accroché au chapeau et relié à des moyens d'accrochage de l'armature et un moyen disposé sur le câble pour raccourcir le câble. A tool is used for this, characterized in that it comprises an upper cap to be placed at the top of the post, a cable hooked to the cap and connected to means for hooking the frame and a means arranged on the cable to shorten the cable.
Des moyens de maintien sont avantageusement une hampe reliée au chapeau et à une boucle inférieure enserrant le poteau. Le chapeau comprend avantageusement une structure à pointe coiffant le poteau et formée de deux pièces arquées réunies par des chevilles munies de réas ; le câble peut alors être disposé glissant sur les réas et muni de deux moyens d'accrochage de l'armature à ses deux extrémités. Holding means are advantageously a pole connected to the hat and to a lower loop enclosing the post. The cap advantageously comprises a pointed structure covering the post and formed of two arched pieces joined by dowels provided with sheaves; the cable can then be placed sliding on the sheaves and provided with two means for hooking the armature at its two ends.
On va maintenant décrire l'invention plus en détail à l'aide des figures suivantes annexées à titre illustratif et non limitatif :
- la figure 1 illustre une ligne électrique à poteaux en bois ;
- la figure 2 illustre l'outil
- et la figure 3 illustre le mécanisme de commande de l'outil.The invention will now be described in more detail with the aid of the following figures, which are given by way of illustration and not limitation:
- Figure 1 illustrates an electric line with wooden poles;
- Figure 2 illustrates the tool
- And Figure 3 illustrates the tool control mechanism.
Le poteau de bois de la figure 1 porte la référence 1 et se termine classiquement par un sommet en pointe 2. L'armature 3 est formée essentiellement de poutrelles 4 réunies par deux colliers 5 enserrant le poteau 1. Les poutrelles 4 s'étendent au-dessus du sommet en pointe 2 et portent les nappes de fils électriques 6 en affectant une forme de voûte, d'où le nom de "nappe-voûte" qui leur est donné. The wooden post of FIG. 1 bears the reference 1 and conventionally ends with a pointed apex 2. The frame 3 is essentially formed of beams 4 joined by two collars 5 enclosing the post 1. The beams 4 extend to the -above from the top to the point 2 and carry the layers of electric wires 6 by affecting a shape of vault, hence the name "tablecloth-vault" which is given to them.
L'outil est composé de deux parties séparables bien visibles sur la figure 2 : une monture et un dispositif de levage. The tool is composed of two separable parts clearly visible in Figure 2: a mount and a lifting device.
La monture se compose d'un chapeau supérieur 7 posé sur le sommet en pointe 2, d'une hampe 8 reliée au chapeau supérieur 7 par une articulation 9 et d'une sangle 10 à l'extrémité inférieure de la hampe 8. The frame consists of an upper cap 7 placed on the apex at the point 2, a pole 8 connected to the upper cap 7 by a hinge 9 and a strap 10 at the lower end of the pole 8.
Le chapeau supérieur 7 est lui-même composé d'un anneau 11 et d'une structure à pointe 12. Cette dernière est formée de deux équerres parallèles 13 reliées par trois chevilles 14 ici garnies de réas 15. The upper cap 7 is itself composed of a ring 11 and a point structure 12. The latter is formed by two parallel brackets 13 connected by three pins 14 here provided with sheaves 15.
La bague 11 est soudée aux équerres 13 et se trouve dans le creux qu'elles forment.The ring 11 is welded to the brackets 13 and is located in the hollow which they form.
La monture est placée sur le poteau 1 en posant le chapeau supérieur 7 sur le sommet en pointe 2. La bague Il entoure le sommet en pointe 2, la structure en pointe 12 le coiffe. La hampe 8 pend le long du poteau 1 en s'étendant sur les colliers 5. La sangle 10, qui se trouve sous la nappe-voûte 3, est alors bouclée autour du poteau 1 pour maintenir solidement la monture. The frame is placed on the post 1 by placing the upper cap 7 on the point apex 2. The ring It surrounds the point apex 2, the point structure 12 covers it. The pole 8 hangs along the pole 1 extending over the collars 5. The strap 10, which is located under the arch ply 3, is then looped around the pole 1 to securely hold the frame.
Le dispositif de levage est compose essentiellement d'un câble 16 et d'un treuil 17. Le câble 16 est terminé à une extrémité par un crochet 18 que l'opérateur accroche à un des colliers 5 avant de disposer le câble 16 sur les réas 15 de façon qu'il pende des deux côtés du poteau 1 . Le treuil 17 porte (figure 3) une poulie 19 autour de laquelle l'extrémité opposée du câble 16 est enroulée, une roue à rochet 20 solidaire de la poulie 19, un levier 21 destiné à faire tourner la roue à rochet 20 par un cliquet 22 monté sur le levier 21 et un second crochet 23 qui est accroché sur le même collier 5 que le crochet 18. The lifting device essentially consists of a cable 16 and a winch 17. The cable 16 is terminated at one end by a hook 18 which the operator hooks to one of the collars 5 before placing the cable 16 on the sheaves 15 so that it hangs on both sides of the post 1. The winch 17 carries (FIG. 3) a pulley 19 around which the opposite end of the cable 16 is wound, a ratchet wheel 20 secured to the pulley 19, a lever 21 intended to rotate the ratchet wheel 20 by a ratchet 22 mounted on the lever 21 and a second hook 23 which is hung on the same collar 5 as the hook 18.
L'opération de levage consiste à enrouler le câble 16 sur la poulie 19 par une action de "pompage" sur le levier 21 : le cliquet 22 et la roue à rochet 20 s 'encliquettent quand le levier 21 est levé, ce qui fait tourner la poulie 19 et enroule le câble 16, mais
Le cliquet 22 glisse sur la roue à rochet 20 quand le levier est abaissé. Or la poulie 19 est munie d'un accouplement unidirectionnel (non représenté mais courant, qui peut être formé de deux disques à dentures dissymétriques sur des surfaces planes en regard et d'un ressort pour presser les dentures l'une sur l'autre) qui l'empêche de tourner dans le treuil 17 de maniere à dérouler le câble 16. Il en résulte que la longueur libre du câble 16 diminue sans cesse et que le collier 5 et la nappe-voûte 3 sont rapidement soulevées, avec un effort sur la monture que Les réas 15, disposés symétriquement sur la structure en pointe 12, maintiennent équilibré. Aucun déversement de la monture n'est donc à craindre.The lifting operation consists in winding the cable 16 on the pulley 19 by a "pumping" action on the lever 21: the pawl 22 and the ratchet wheel 20 engage when the lever 21 is raised, which makes it rotate the pulley 19 and wind the cable 16, but
The pawl 22 slides on the ratchet wheel 20 when the lever is lowered. Now the pulley 19 is provided with a unidirectional coupling (not shown but common, which can be formed by two discs with asymmetrical teeth on planar facing surfaces and with a spring for pressing the teeth one on the other) which prevents it from turning in the winch 17 so as to unwind the cable 16. As a result, the free length of the cable 16 is constantly decreasing and the collar 5 and the arch ply 3 are quickly raised, with an effort on the frame which the sheaves 15, arranged symmetrically on the pointed structure 12, maintain balanced. No spillage of the frame is therefore to be feared.
Les colliers 5 glissent sous la hampe 8. The collars 5 slide under the pole 8.
L'articulation 9 permet de serrer correctement la sangle 10 sans devoir déplacer le chapeau supérieur 7 ni plier la hampe 8. The articulation 9 makes it possible to correctly tighten the strap 10 without having to move the upper cap 7 or fold the pole 8.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9205734A FR2691300B1 (en) | 1992-05-12 | 1992-05-12 | DEVICE FOR LIFTING A SUPPORT STRUCTURE FOR ELECTRIC LINES ON A WOOD POST. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9205734A FR2691300B1 (en) | 1992-05-12 | 1992-05-12 | DEVICE FOR LIFTING A SUPPORT STRUCTURE FOR ELECTRIC LINES ON A WOOD POST. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2691300A1 true FR2691300A1 (en) | 1993-11-19 |
FR2691300B1 FR2691300B1 (en) | 1997-03-14 |
Family
ID=9429697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9205734A Expired - Lifetime FR2691300B1 (en) | 1992-05-12 | 1992-05-12 | DEVICE FOR LIFTING A SUPPORT STRUCTURE FOR ELECTRIC LINES ON A WOOD POST. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2691300B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2848031A1 (en) * | 2003-03-27 | 2004-06-04 | France Telecom | Fixing cap for overhead telecommunication cable suspension on ridge sheathing, has limiting device that limits charge/load releases cap with sliding motion along post under action of force exerted by cable on cap |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104485618A (en) * | 2014-10-30 | 2015-04-01 | 国家电网公司 | Electrical metering box incoming cable auxiliary installation device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1669719A (en) * | 1925-10-05 | 1928-05-15 | John R Marshall | Conductor suspension apparatus |
US4684031A (en) * | 1985-07-15 | 1987-08-04 | Frederick Sigurdur Bergman | Material hoisting gin |
-
1992
- 1992-05-12 FR FR9205734A patent/FR2691300B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1669719A (en) * | 1925-10-05 | 1928-05-15 | John R Marshall | Conductor suspension apparatus |
US4684031A (en) * | 1985-07-15 | 1987-08-04 | Frederick Sigurdur Bergman | Material hoisting gin |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2848031A1 (en) * | 2003-03-27 | 2004-06-04 | France Telecom | Fixing cap for overhead telecommunication cable suspension on ridge sheathing, has limiting device that limits charge/load releases cap with sliding motion along post under action of force exerted by cable on cap |
Also Published As
Publication number | Publication date |
---|---|
FR2691300B1 (en) | 1997-03-14 |
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