EP1441814A1 - Sicherheitsverankerungsvorrichtung mit einem stossdämpfer - Google Patents

Sicherheitsverankerungsvorrichtung mit einem stossdämpfer

Info

Publication number
EP1441814A1
EP1441814A1 EP02793163A EP02793163A EP1441814A1 EP 1441814 A1 EP1441814 A1 EP 1441814A1 EP 02793163 A EP02793163 A EP 02793163A EP 02793163 A EP02793163 A EP 02793163A EP 1441814 A1 EP1441814 A1 EP 1441814A1
Authority
EP
European Patent Office
Prior art keywords
anchoring device
base
tubular body
tilting
triggering
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
Application number
EP02793163A
Other languages
English (en)
French (fr)
Other versions
EP1441814B1 (de
Inventor
Rodolphe Argoud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Argoud Rodolphe
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1441814A1 publication Critical patent/EP1441814A1/de
Application granted granted Critical
Publication of EP1441814B1 publication Critical patent/EP1441814B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/04—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion incorporating energy absorbing means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3276—Arrangements on buildings for connecting safety-lines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3276—Arrangements on buildings for connecting safety-lines
    • E04G21/329—Arrangements on buildings for connecting safety-lines with measures for dampening the fall
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S256/00—Fences
    • Y10S256/06—Building construction guard rail

Definitions

  • the present invention relates to the field of anchoring security, for example of people working at height on the roofs of buildings or other works.
  • the worker has a harness and a link which he connects to an anchoring device.
  • this anchoring device fixed to a reception structure, for example the roof, which ensures the retention of the fall.
  • Such an anchoring device must be able to limit the person's height as much as possible and induce the minimum of effort on the reception structure.
  • the reception structure does not have sufficient strength to withstand significant efforts, such as for example during a fall. It is therefore essential, in these cases, that the anchoring device has an energy absorption capacity, functioning in a way as a shock absorber.
  • Known anchoring devices often have damping means which must be tared, so that they resist shock or traction whose intensity is below a certain threshold.
  • the parameters can be difficult to reconcile and the tests do not generally make it possible to carry out a verification without irreversibly damaging the anchoring device.
  • roof covering should be understood to mean any covering of a roof, and in particular a ribbed steel tank, for example with a trapezoidal profile.
  • the object of the present invention is to provide an anchoring device whose reliability can be checked without additional cost, and which if necessary can be reused with a minimum of repair either for additional tests or for fixing to a roof.
  • a complementary object of the present invention aims to provide anchoring security despite a low resistance to forces presented by a roof covering on which the anchoring device is fixed.
  • the anchoring device intended to equip, for example, a roof of a building, comprises:
  • a base associated with fixing means for fixing it to a roof covering
  • a hooking element mounted on the base and comprising a hooking ring at its end remote from the base
  • - tilting means allowing the hooking element to tilt in the event of an impact, in a plane normal to the plane of extension of the base, - damping means making it possible to absorb energy during the tilting of the hooking element,
  • said damping means comprising a triggering means making it possible to prevent any tilting of the hooking element when the latter is subjected to a force whose intensity is less than a predetermined threshold, said triggering means being a removable and separate part from the other components of the damping means.
  • the damping means comprise sliding elements with friction.
  • the triggering means is a deformable part whose resistance to deformation determines the predetermined triggering threshold.
  • the anchoring device comprises:
  • a threaded rod articulated on the base with one of its ends, the other end extending inside a tubular body, crossing an opening formed in a first end of the tubular body, - a sheath, the upper face of which has an opening traversed by an end piece of the hooking ring, said end piece also passing through the second end of said tubular body so as to enclose said upper face of the sheath, the lower end of said sheath being open and taking support with its edge on the base, - means for mounting the triggering means substantially at the end of the threaded rod extending inside the tubular body,
  • peripheral supports for the triggering means integral with the tubular body opposing the movement of said triggering means in the event of stress on the attachment ring.
  • the peripheral supports are produced with the edge of a friction tube inserted into the tubular body, said friction tube being in abutment with its opposite edge on the inner face of the first end of the tubular body.
  • the triggering means is a deformable washer.
  • the mounting means of the washer comprise a sliding guide, a conical part, an O-ring and a nut, mounted on the threaded rod.
  • the base comprises means for adjusting the spacing of the fixing means.
  • FIGS. 1 and 2 are schematic views of the anchoring device according to the invention in two different situations
  • FIG. 3 is a section of the anchoring device according to the invention, in the vertical position
  • FIG. 4 is an enlarged detail of FIG. 3,
  • FIG. 5 is a section through the anchoring device stressed by a force F
  • FIG. 6 is an enlarged detail of FIG. 5,
  • FIG. 7 is a section of the anchoring device according to the invention, in the tilted position.
  • Figure 1 shows an exemplary embodiment of an anchoring device 1 according to the invention.
  • the anchoring device 1 comprises a hooking element 2 surmounted by a hooking ring 3.
  • the anchoring device 1 also comprises a base 4 intended to be fixed to a roof covering 5. Mounting means for the attachment element 2 on the base 4 are also provided.
  • the base 4 is intended to be fixed to the roof covering 5 using fixing means 6 of the self-drilling screw type passing respectively through a support end 7 of the base 4 to be screwed for example in a rib 8 of the roof covering 5, as shown for example in Figure 3.
  • the base 4 has for this purpose holes 9. These are formed for example in the support end 7 of the base 4.
  • Base 4 consists of two parts 4a, 4b partially superimposed and capable of sliding relative to one another for adjustment purposes.
  • Each of the parts 4a, 4b is provided with an oblong hole 10, 1 1 formed substantially in the central part and oriented so as to overlap each other over at least part of their length.
  • the oblong holes 10 and 1 1 remain at least partially superimposed.
  • the anchoring device 1 also comprises clamping means passing through the oblong holes 10 and 1 1 in overlap, so as to allow the two parts 4a, 4b forming the base 4 to be joined to the attachment element 2.
  • This the latter comprises a sheath 12 in which are integrated at least in part clamping means.
  • the latter are constituted by the means for mounting the attachment element 2 on the base 4.
  • the anchoring device 1 also comprises means enabling it to tilt the hooking element 2 in a plane normal to the plane of extension of the base 4, and this in the event of stress on said hooking element 2.
  • FIG. 2 thus represents the latching element 2 in a tilted position, for example after a stress or a strong pull on the latching ring 3.
  • the latching element 2 is thus tilted by an angle I so that the orientation of its longitudinal axis J is as close as possible to an axis contained in the extension plane of the base 4.
  • Strong traction on the hooking ring 3 in the tilted position (FIG. 2) will thus lead to shearing forces on the fixing means 6 of the base 4.
  • the traction or tearing forces will thus be substantially reduced.
  • This is perfectly compatible with a lower resistance of a roof covering 5, which may have a relatively small thickness.
  • the anchoring device 1 comprises for example energy absorption or damping means activated during the tilting of the hooking element 2 relative to the base 4. These energy absorption means are for example integrated into the sheath 1 2.
  • the base 4 comprises means for adjusting the spacing between the fixing means 6.
  • the adjustment means are produced with the base 4 in two parts 4a, 4b capable of sliding relative to one another, with the oblong holes 10 and 1 1 which overlap each other over at least part of their length and with clamping means.
  • the latter comprise clamping plates 13 and 14 intended to enclose the superimposed base parts 4a, 4b.
  • a connecting piece 1 5, of the substantially U-shaped stirrup type thus passes respectively through the clamping plate 14, the oblong holes 10 and 1 1 and the clamping plate 1 3, and present at each of its branches 1 5 has a locking nut 1 6.
  • the locking nuts 1 6 are thus found under the base 4.
  • the anchoring device 1 also comprises a threaded rod
  • the upper end 1 2a of the sleeve 12 has an opening traversed by a nozzle 3a of the attachment ring 3.
  • the latter also passes through the second end 1 8b of the tubular body 1 8 so as to enclose said upper end 1 2a of the sleeve 1 2.
  • the lower end of the sleeve 1 2 is open and bears, with its edge, on the base 4 and more precisely on the clamping plate 14.
  • the damping means are for example integrated in the sleeve 1 2.
  • the damping means comprise a trigger means making it possible to prevent any tilting of the hooking element 2 when the latter is subjected to a force whose intensity is less than a predetermined threshold.
  • the triggering means is a removable part, and distinct from the other constituent elements of the damping means. The latter can then be replaced independently of the other constituent elements of the damping means or of the anchoring device 1.
  • the anchoring device 1 for this purpose comprises means for mounting the triggering means, substantially at the end of the threaded rod 1 7 extending inside the tubular body 18.
  • the latter advantageously has peripheral supports for the trigger means, integral with said tubular body 1 8 and opposing the movement of said trigger means in the event of stress on the hooking ring 3.
  • the trigger means is preferably a part whose resistance to deformation determines the predetermined trigger threshold, and therefore the start of depreciation.
  • the peripheral supports in the tubular body 1 8 are produced with a song 1 9 of a friction tube 20 inserted in the tubular body 1 8.
  • the friction tube 20 is supported with its opposite song on the inner face 1 8c of the first end 1 8a of the tubular body 1 8.
  • the triggering means is produced by a deformable washer 21.
  • the anchoring device 1 for this purpose comprises means for mounting the deformable washer 21 which comprise a sliding guide 22, a conical piece 23, an O-ring 24 and a retaining nut 25, all mounted on the threaded rod
  • the sliding guide 22 is intended to center the threaded rod 1 7 in the friction tube 20 during the tilting of the hooking element 2, leading to sliding with friction of the washer 21 deformed in said friction tube 20.
  • the sliding guide 22 is held in position thanks to the O-ring 24 and to the conical part 23, which also blocks the washer 21 on the upper edge of the friction tube 20, the whole being held in position also by tightening the nut 25 at the end of the threaded rod 1 7.
  • the sliding with friction of the washer 21 deformed in the friction tube 20 makes it possible to absorb energy during the tilting of the hooking element 2.
  • the damping means comprise elements sliding with friction and the washer 21 makes it possible to produce a triggering means making it possible to prevent any tilting of the hooking element 2 when the latter is not sufficiently stressed.
  • a biasing force of the fastening ring 3 is materialized by the arrow F in FIG. 5.
  • a sufficient intensity of such a force F corresponding for example to a fall of a person from a roof leads to a deformation of the washer 21 and at a homogeneous and peripheral friction in the friction tube 20.
  • the relative tension exerted between the friction tube 20 and the threaded rod 1 7 is represented by the arrow T in FIG. 6.
  • the conical part 23 drives thus the washer 21 in the friction tube 20 as soon as the tension T has reached an intensity greater than that corresponding to the threshold of deformation of said washer 21.
  • the force F thus materializes the weight d 'A person who has fallen, as shown in Figure 7.
  • the force F is thus transmitted to the fixing means 6 mainly in the form of shear force.
  • the risk of tearing off the fixing means 6 engaged in ribs 8, for example self-drilling screws, is therefore greatly reduced.
  • the clamping means of the hooking element 2 are obtained with the end piece 3a being screwed into a clamping nut 3b with the rotation of the hooking ring 3 and thus enclose the second end 1 8b of the tubular body 1 8 and the upper face 1 2a of the sleeve 1 2.
  • the dimensions of the sleeve 1 2 and of the tubular body 1 8 are chosen to obtain an optimal tightening of the washer 21 on the edge 1 9 of the friction tube 20 when the element hooking 2 is in vertical position.
  • the tightening is obtained by the rotation of the attachment ring 3, the articulation of the threaded rod 1 7 on the base 4 and the support of the sleeve 1 2 on said base 4.
  • the nut 3b can be replaced by a tapped hole in the upper face 1 2a of the sleeve 1 2.
  • the base 4 comprises two arms 40a, 40b superimposed in their central part. Holes 40c provided at each end of the arms 40a, 40b, are intended to be traversed for example by self-drilling screws.
  • the arms 40a, 40b are capable of pivoting with respect to each other for the purpose of adjustment.
  • oblong slots 41, 42 are formed in each arm 40a, 40b substantially in the central position.
  • the oblong slots 41, 42 of the arm 40a thus cover, at least in part, the oblong slots of the other arm 40b.
  • the extent of such overlap is a function of the relative pivoting of the two arms 40a, 40b.
  • the clamping means comprising for example the bracket 1 5, pass through the oblong slots 41, 42 superimposed on the two arms 40a, 40b and thus make it possible to secure the two arms 40a, 40b forming the base 4, with the element d 'attachment 2.
  • Before tightening it is also possible by means of the relative pivoting of the two arms 40a, 40b to modify the spacing of the holes 40c and consequently the fixing means.
  • the base 4 can then be adapted to roof covers having different spacings between the ribs 8.
  • An advantage of the anchoring device 1 according to the invention is the possibility of tilting in any plane normal to the extension plane of the base 4. Another advantage lies in the adaptability of the anchoring device 1 at different spacings between the ribs 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Emergency Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Fluid-Damping Devices (AREA)
  • Vibration Dampers (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
EP02793163A 2001-11-05 2002-10-10 Sicherheitsverankerungsvorrichtung mit einem stossdämpfer Expired - Lifetime EP1441814B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0114285A FR2831826B1 (fr) 2001-11-05 2001-11-05 Dispositif d'ancrage de securite comportant un amortisseur de choc
FR0114285 2001-11-05
PCT/FR2002/003454 WO2003039680A1 (fr) 2001-11-05 2002-10-10 Dispositif d'ancrage de securite comportant un amortisseur de choc

Publications (2)

Publication Number Publication Date
EP1441814A1 true EP1441814A1 (de) 2004-08-04
EP1441814B1 EP1441814B1 (de) 2005-07-06

Family

ID=8869073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02793163A Expired - Lifetime EP1441814B1 (de) 2001-11-05 2002-10-10 Sicherheitsverankerungsvorrichtung mit einem stossdämpfer

Country Status (7)

Country Link
US (1) US7163083B2 (de)
EP (1) EP1441814B1 (de)
AT (1) ATE299037T1 (de)
DE (1) DE60204977T2 (de)
ES (1) ES2242089T3 (de)
FR (1) FR2831826B1 (de)
WO (1) WO2003039680A1 (de)

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* Cited by examiner, † Cited by third party
Title
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US20040256176A1 (en) 2004-12-23
FR2831826B1 (fr) 2004-01-30
DE60204977T2 (de) 2006-05-18
EP1441814B1 (de) 2005-07-06
DE60204977D1 (de) 2005-08-11
ATE299037T1 (de) 2005-07-15
ES2242089T3 (es) 2005-11-01
FR2831826A1 (fr) 2003-05-09
US7163083B2 (en) 2007-01-16
WO2003039680A1 (fr) 2003-05-15

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