Horizontal lifeline traversing device

B - Operations – Transporting – 61 – B

Patent

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Details

B61B 15/00 (2006.01) A62B 35/04 (2006.01) B61B 3/00 (2006.01) B61B 7/00 (2006.01) B61B 12/02 (2006.01) E04G 21/32 (2006.01)

Patent

CA 2394593

A load attachment system such as commonly used as a horizontal lifeline safety system (10) includes a substantially horizontal lifeline (14) secured at its ends to a building structure (12) and supported intermittently along its length by intermediate supports (26, 126). Each support (26, 126) includes a horizontal bar (38, 138) for supporting the line (14). The system (10) further includes a load attachment device (24, 124) having a pair of grooved rollers (54, 56; 154, 156) that rides on the lifeline. A load ( 18) is supported from the bottom (68, 168) of a C-shaped member (62, 162) which has its top (64, 164) connected to the rollers (54, 56; 154, 156) thereby allowing the device (24, 124) to traverse the supports (26, 126). The bottom (68, 168) of the C-shaped member also carries a rotatable paddle wheel (74, 174) which prevents the device (24, 124) from being removed from the line (14). The paddle wheel (74, 174) rotates when a paddle (78, 178) is engaged by the support's horizontal bar (38, 138) as the device traverses the support (26, 126).

La présente invention concerne un système de préhension de charge, tel qu'un système de sécurité à cordage horizontal (10) couramment utilisé, comprenant un cordage sensiblement horizontal (14) fixé par ses extrémités à une structure de construction (10) et soutenu en discontinu sur sa longueur par des supports intermédiaires (26, 126). Chaque support (16, 126) comprend une barre horizontale (38, 138) pour porter le cordage (14). Ce système (10) comprend également un dispositif de préhension de charge (24, 124) comportant une paire de galets rainurés (54, 56; 154, 156) qui roulent sur le cordage. Une charge (18) est portée par la base (68, 168) d'un élément en C (62, 162), dont la partie supérieure (64, 164) est reliée aux galets (54, 56: 154, 156), pour permettre au dispositif (24, 124) de déplacer les supports (26, 126). La base (68, 168) de l'élément en C porte également une roue à aubes rotatives (74, 174) qui empêche le dispositif (24, 124) de s'enlever du cordage (14). La roue à aubes (74, 174) tourne lorsqu'une aube (78, 178) s'engrène avec la barre horizontale du support (38, 138) au fur et à mesure que le dispositif déplace le support (26, 126).

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