FR3047495A1 - POST POLEAU OF ANCHOR POINT - Google Patents

Abstract

The invention relates to a post (1) carrying anchor point, the post (1) having a rod (2) which extends in a longitudinal direction and which is secured to an anchor plate (3). According to the invention, the post (1) comprises, on the one hand, a hollow body (13) secured to the anchoring plate (3), extending in the longitudinal direction and surrounding the rod (2), and on the other hand, an absorption piece (15) having a honeycomb structure, adapted to absorb energy, arranged coaxially with the rod (2) and occupying a defined height, the space between the rod ( 2) and the hollow body (13).

Description

Pole carrying point, anchoring

The present invention is in the fields. personal protection and the prevention of fall risks associated with a professional activity and / or leisure practiced while suspended in a vacuum, and / or at a height,

A pole, carrier of. Anchorage point is a personal safety adapted to withstand a possible fall of a person, practicing an activity- in a vacuum and / or in height. For these purposes, at least one type of anchor bearing post comprising a rod extending in a longitudinal direction is known, the rod being fixed at its base to an anchoring plate adapted to be fixed, rigidly, to a mounting platform, such as for example a roof, a concrete surface, etc., the rod comprises anchoring means to which can be attached a lanyard for connecting person to the post anchor carrier . Conventionally, the rod is adapted to withstand a static force and. is. bend · without, break in case of exceeding, its resistance threshold, static, for example during a dynamic impact due to a fall.

This type of post anchor carrier has the disadvantage. In a fall, not enough to absorb the dynamic impact. As a result, the energy of the impact is transmitted back to the mounting platform resulting in most cases in damage to that platform by tearing. In order to overcome this drawback, certain solutions provide for the provision of energy absorption systems on the lifeline of the insured person. An example of these energy absorbing systems, corresponds to a lanyard sewn on itself and whose seams are torn to absorb the energy of the dynamic impact. However, no system of the prior art addresses the problem of damage to the attachment platform.

The present invention proposes to solve the problems identified in the state of the art.

The present invention relates to a post carrying anchor point, the post having a rod which extends in a longitudinal direction and which is secured to an anchor plate, characterized in that it comprises, on the one hand, a hollow body secured to the anchoring plate, extending in the longitudinal direction and surrounding the rod, and secondly, an absorption piece comprising a honeycomb structure, adapted to absorb energy, arranged in a manner coaxial to the rod and occupying a defined height, the space between the rod and the hollow body. Advantageously, the hollow body imparts greater rigidity to the rod, increasing the resistance threshold of the pole to a static load, while the energy absorbing part makes it possible to absorb the energy of a dynamic impact due to a fall of a person tied to the pole by a lanyard. Thus, during a fall, the energy absorbed by the absorption piece makes it possible not to damage the attachment platform on which the anchor post is anchored.

In other words, thanks to its characteristics, the post, carrying anchor point according to the present invention advantageously has, on the one hand, the properties of .resistance to a static load to ensure a person ., and secondly, energy absorbing properties · enabling, absorb the energy of a dynamic impact in case of. fall of the person tied to the anchor post by one. lanyard.

According to one. characteristic of the invention, the absorption piece consists of a polymeric material, cellular ;.

Furthermore, according to the invention, the absorption piece is connected to the rod. by means of assembly. Advantageously, positioning the absorption piece at the base of the stem allows it to absorb the energy of the dynamic impact before it impacts on the planned binding between the post and the platform. fixing, thus avoiding that it is damaged.

According to another characteristic of the invention, the anchoring point carrying post comprises: a rupture piece disposed coaxially with the rod, and having an internal section of the fracture piece occupying a defined height. the space between the stem and the hollow body. According to a feature of the first aspect of the invention, the breaker has an outer section closing the upper end of the hollow body protruding from the hollow body and resting. On the. edge, upper part of the hollow body. This piece of rupture constitutes the cohesive element of the post and makes it possible to co-operate the rod with the hollow body so as to increase the threshold of resistance of the post to a static charge.

The rupture piece is preferably made of a non-ductile polymeric material.

Moreover, the rupture piece can advantageously comprise a sealing zone ·. This feature,.-Reduces the. risk of penetration of ·, the water in the hollow body, and to prevent water from damaging the pole.

Said breaker piece has a collar of. water discharge, extending from the periphery of the outer section, beyond the dimensions; hollow body in a direction defining a. acute angle · with the wall of the hollow body.

According to a feature of the invention, the rod is made of a ductile material capable of deforming when the energy of a dynamic impact exceeds a resistance threshold value of the pole.

According to another characteristic of the invention, the anchor plate comprises at least four attachment points, solidarisant the pole to one. fixing platform. Advantageously, the features of the invention also make it possible to reduce the thickness of. the. anchor plate and decrease the number of attachment point with the mounting platform while ensuring high static resistance and dynamic impact absorption.

The anchor bearing post according to the invention is further characterized in that the anchor plate has at least four attachment points that secure the post to the attachment platform.

According to an advantageous characteristic of the invention, the anchor bearing post supports a lifeline. Other features and advantages will become apparent in the following detailed description of an exemplary embodiment of the invention. invention, illustrated by the five figures set out in the appendix and in which: FIG. 1 corresponds to a perspective representation of a carrier post; of. Anchorage point according to one embodiment of the invention. FIG. 2 corresponds to a perspective view of a fracture piece and / or a piece of absorption of the carrier post. anchor point of Figure 1; Figure 3 is a side view of the breaker and / or the absorption part of Figure 2; FIG. 4 is a perspective view of the anchor point carrying post of FIG. 1 and FIG. 5 is a diagrammatic representation of a life line in which the anchor bearing post of FIG. 1 is used as a flexible anchor, it should be noted that in order to simplify this representation the links between the lifeline and the flexible belay supports are not illustrated.

The present invention relates to a post 1 carrying an anchor point comprising a rod 2 extending in a longitudinal direction, and an anchoring plate 3 perpendicular to the rod 2 and adapted to fix the post 1 carrier line carrier. life · at a stable mounting platform, such as an industrial shed roof made of trapezoidal steel sheet at least 0.5 mm thick, sandwich panels, metal or wood structure, OSB panels, timber, flat or rounded standing seam cover, concrete surface, etc.

In the example illustrated in Figure 1, the rod 2 has a thread, it has a diameter for example between 10 mm and 25 mm. This rod 2 is preferably made of a ductile material (for example stainless steel, galvanized steel, galvanized steel, or any other material having equivalent properties). Thus, during a dynamic impact exceeding a resistance threshold to a static load of the rod 2, the latter has the property of deforming without breaking. Therefore, in order to increase the static resistance threshold of the rod 2, it is secured mechanically to its base 4 with the anchor plate 3 by means of assembly 5 (for example a nut), to avoid any play mechanical, a washer 6 being interposed between the assembly means 5 and a lower face 7 of the anchor plate 3 (shown in Figure 1). The rigidity of the attachment of the anchor plate 3 to the attachment platform is an important parameter conferring a better static resistance to the post 1 carrying anchor point. This attachment of the plate, anchoring 3 to the attachment platform is provided by at least four attachment points, preferably six attachment points. The attachment points are connected to the attachment platform by a fastener 8 adapted to create a rigid attachment between the anchor plate 3 and the attachment platform (for example a rivet, or any other mechanical means capable of achieving a rigid mechanical connection between the attachment platform and the anchor plate). In order to obtain optimum mechanical strength, the anchor plate .3. is made of a rigid material (for example aluminum or any other equivalent material) and preferably has a thickness of between 2 mm. and 20 mm.

The post 1 comprises at the top of the rod 2 anchoring means 9, here a ring 10, for hanging one or more lanyards; each connected to a person carrying out a. activity in height and / or suspended in the vacuum ... The rod 2 and the ring 10 are secured to one another by mechanical means 11, In the example illustrated in FIG. 10 has one. ring 12 which has a threaded orifice; complementary to the threading of the rod 2, the ring 10 'is secured by screwing the ring 12 to the top of the rod 2. Advantageously, the ring 12 allows to orient according to its degree of screwing on the rod 2, the ring 10, in any direction perpendicular to the plane defined by the amounts of the ring.

In addition, the pole 1 comprises a hollow body 13 which extends in the same longitudinal direction as the rod 2 and belt the latter. The hollow body 13 is preferably made of a rigid material (for example aluminum or any other equivalent material). In the example of Figure 1 # the hollow body 13 is a hollow cylinder having a diameter between .20 mm and 80 no and sa. wall 14 has a thickness of between 1 mm and 5 mm. Of course, other dimensions can also be envisaged.

In order to absorb the energy of a dynamic impact, the anchor point 1 is provided with a power absorbing member 15 adapted to absorb energy. The energy absorbing part 15 is held rigidly at. the base 4 of the rod 2 at the junction between the rod 2 and the anchor plate 3 by assembly means 5, This energy absorbing part 15 comprises a honeycomb structure having a cellular density of at least ten percent, i.e., an air density of at least ten percent within the honeycomb structure. This energy absorbing part 15 is preferably made of polymeric material.

When disposed in the hollow body 13, the energy absorbing member 15 occupies on a defined height the space between the rod 2 and the inner face 15 of the wall 14 of the hollow body 13 · In us plane perpendicular to the longitudinal direction.

The energy absorbing part 15 comprises a longitudinal central bore of diameter slightly greater than that of the rod 2, and dimensions slightly smaller than those of the internal space of the hollow body 15. These characteristics allow it to be inserted. in the hollow body 13, the central bore for arranging the absorption piece 15 in the hollow body 13 coaxially with the rod 2, It follows that the absorption piece 15 surrounds the rod 2 and occupies the space free between the rod 2 and the inner faces 16 of the wall 14 of the hollow body 13.

Advantageously, the position of the absorption piece 15 at the junction between the anchor plate 3 and the rod 2, allows it to absorb the energy which could be reflected on the anchor plate 3 and its fixing, with the fixing platform.

Thus, the characteristics of the absorption part 15 make it possible, during a dynamic impact, to avoid deterioration of the platform for fixing the anchor plate 3.

In order to mechanically fasten the hollow body 13 and the rod 2, a break piece 18 made of a non-ductile polymeric material is adapted to fit into the top of the assembly formed by the hollow body 13 and the rod · 2., When the breaking piece 18 is nested in the. hollow body 13 coaxially with the rod 2, it occupies, over a defined height, the space between the rod 2 and the inner face 16 of the wall 14 of the hollow body 13 .in a plane perpendicular to the longitudinal direction of the hollow body 13. This breaking piece 18 constitutes a mechanical connection between the hollow body 13 and the rod 2, and allows them to cooperate in order to give the column 1 a larger threshold of static resistance.

In the present embodiment, in order to simplify the industrialization of the post 1 carrying the anchor point, the absorption piece 15 and the break piece 18 consist of an identical piece shown in FIG. rupture member 18 comprises, firstly, a central lumen 19 passing therethrough in a longitudinal direction, this central lumen 19 being of section slightly greater than the diameter of the rod 2, a second portion, an inner section 20 having slightly smaller than those of the internal space of the hollow body 13, and secondly, an outer section 21 having dimensions greater than those of the internal space of the hollow body 13 so as to fit at the top of the assembly formed by the hollow body 13 and the rod 2, and to exceed the outer face 22 of the wall 14 of the hollow body 13 to rest on the upper edge thereof (illustrated in Figures 1 and 4). It should be noted that the outer section 21 of the absorption piece 15 protrudes from the outer face 22 of the wall 14 of the hollow body 13 and provides a mechanical connection between the lower edges of the hollow body 13 and the anchor plate 3 (shown in Figure 4).

This outer section 21 of the rupture piece 18 preferably has a height of between 1 min and 10 mm. In order to obtain optimum static mechanical resistance, the rupture piece. 18 is tensioned by mechanical locking elements 23 (for example a nut) disposed on the rod 2 and on either side of the breaker 18. Preferably, to avoid any play. mechanical, a washer 6 is interposed between the piece of. rupture 18 and a mechanical clamping member 23 (shown in FIGS. 1 and 4). The mechanical strength of the outer section 21. of the breaker 18 constitutes a threshold resistance value of the pole 1 to a static load. This resistance value threshold at a static load is between IkN and 3k ", it is exceeded when too much · energy is transmitted to the outer section 21 of the breaker 18 ··, and makes it break ·.

One such amount of energy may be due to a dynamic impact caused by the fall of a person related to the post 1 anchor carrier. lanyard,

The breaking of the outer section 21 of the breaker 18 causes a projection of the inner section 20 of the breaker 18 and the clamping element 23 along the rod 2 towards the base 4 thereof. The inner section 20 of the breakage piece 18 then hits the assembly means. 5, maintaining the absorption piece 15 at the junction between the rod 2 and the anchor plate. 3. Xa absorption piece 15 plays its role · absorbing. Energy, the dynamic impact by compression of its alveolar structure, the rupture of the. external section. 21 of the breaking piece 18 also causes the separation of the rod 2. and the hollow body 13, the rod 2 being free, to deform under the weight of the person, linked to the loin ... following a fall, the compression of the absorption part 15 allows in particular to preserve the attachment of the anchor plate 3. au. platform level, fixing. Thus, in the event of an injury to the person related to the lanyard, the post 1 once its rod 2 deformed, remains firmly anchored on the attachment platform. This characteristic gives the post 1 deformed anchor point carrier a resistance to a static load. Preferably, this resistance is equivalent to a static load of at least three people suspended from its anchoring means 9, a load of 500 kg to 1000 kg. Thus, relief can intervene using the same post 1 anchor carrier to which is connected the lanyard of the person in difficulty. Advantageously, this characteristic makes it possible to increase the speed of action of the emergency services, by avoiding them having to install one or more other posts 1 carrying anchor points to the attachment platform.

According to one particularity of the invention, the post 1 carrying anchor point comprises a sealing zone at the level of the rupture piece 18 which makes it possible to prevent water (for example water from rain) does not penetrate inside the hollow body 13. Preferably, the sealing zone extends over a height of between 5 mm and 250 mm from the top of the hollow body.

As illustrated in FIG. 2, in order to protect this sealing zone, a collar 24 of. water jet extends from the periphery of the outer section 21 beyond, the dimensions of the hollow body 13 in a direction defining an acute angle with the wall 14 of the hollow body 13. This collar 24 of water discharge allows to divert any water which could fall at the junction between the hollow body 13 and the breaker 18 and so s'. infiltrate into the sealing area and then into the. hollow body 13. This feature 'avoids' stagnant water inside the body · hollow 13 · does damage the internal structure of the post · 1. anchor carrier and contravene his good functioning in the event of a dynamic impact affecting the pole 1.

In the illustrated example, in FIG. 5, two anchor carrier posts 1 are used as flexible belay supports supporting a lifeline 26. A line of. Life 2.6 • is a cable 27 stretched between two attachment points. Preferably, the cable 27 is made of a material that is resistant to external conditions (for example, stainless · materials.) Here, the 'Life · line 26 is connected to the anchoring means 9' of each. .poteau 1 anchor carrier.

Advantageously, a line of life 26 disposed on a platform overlooking a zone of activity, defines a path along which one to several people can be assured by connecting their lanyard to the lifeline 26.

As is known, a flexible belay support 25 may be used either as the attachment point 28 of the departure of the life line 26 or as the relay point 29 of the life line 26. As shown in FIG. 5, the post 1 carrying anchor point: is used as a flexible anchoring support of the attachment point 28 of the departure of the lifeline 26. In this case, the anchoring means 9 are oriented in the same axis as the longitudinal direction of the lifeline 26 (not shown).

In the case where the anchor point 1 is used as a flexible relay belay support 29 of a lifeline 26, the anchoring means 9 are oriented in a direction perpendicular to the longitudinal direction of the lifeline 26 (not shown).

Advantageously, the fact of multiplying the relay points 29 of a life line 26 makes it possible to increase the static resistance of the line of 26, and thus to increase the maximum number of persons that can be insured at this lifeline. .

In the present exemplary embodiment, the absorption piece 15 and the break piece 18 consist of a single identical piece each fulfilling a different function. However, the breaker 18 and the absorption member 15 may have different shapes and structures, for example: the inner section 20 of the breaker 18 may be formed of a solid structure.

Claims (10)

claims 1. Pole (1) carrying anchor point, the pole (1) having a rod (2) which extends in a longitudinal direction and which is secured to an anchor plate (3), characterized in that it comprises, on the one hand, a hollow body (13) secured to the anchoring plate (3) and extending in the longitudinal direction and surrounding the rod (2), and on the other hand, a piece of absorber (15) having a honeycomb structure, adapted to absorb energy, arranged coaxially with the rod (2) and occupying a defined height, the space between the rod (2) and the hollow body (13); ). 2. Pole (1) carrying anchor point according to claim 1, characterized in that the absorption piece (15) consists of a cellular polymeric material. 3. Post Cl), bearing anchor according to one of. Claims 1 and 2, characterized in that the absorption piece (15) is connected to the rod (2) by means of assembly (5). 4. Pole Cl) bearing anchor point according to one of claims 1 to 3, characterized in that it comprises a breaker piece (13) arranged coaxially with the rod (2) and having a section internal portion (20) occupying, at a defined height, the space between the rod (2) and the hollow body (13), 5. Pole (1) bearing anchor point according to claim 4, characterized in that the breaker comprises an outer section (21) closing the upper end of the hollow body (13) protruding from the hollow body (13). ) and resting on the upper edge of the hollow body (13). 6. Pole (1) carrying anchor point according to one of claims 4 and 5, characterized in that the breaker (18) is made of a non-ductile polymeric material. 7. Pole (1) carrying anchor point according to one of claims 4 to 6, characterized in that the breaker member (18) comprises a sealing zone. 8. Pole (1) carrying anchor point according to one of claims 1 to 7, characterized in that the rod (2) is made of a ductile material capable of deforming when the energy of a dynamic impact exceeds a resistance threshold value of the pole (1). 9. Pole (1) bearing anchor point according to one of claims 1 to 8, characterized in that the anchor plate (3) comprises at least four fixing points solidarisant the post (1) to a platform of fixation. 10. Pole (1) carrying anchor point according to one of claims 1 to 9, characterized in that it supports a life line (26).