Abstract:
The invention relates to a safety system (1) for a roof, more particularly a pitched roof (2), comprising an anchor point (3) and a safety line (4) with which a person working on the roof (2) can be secured to the anchor point (3) or an accessory. A first coupling member (9) is attached to or forms part of the anchor point (3), a second coupling member (14) is attached to or forms part of the safety line (4) or accessory and is suitable for establishing a connection with the first coupling member (9). Further, the system comprises a means (11) for moving the second coupling member (14) to the first coupling member (9).
Abstract:
A self-locking cable gripper includes a housing having a void which tapers between openings at the housing's top and bottom. A collapsible member having a central passage is adjacent the bottom opening. A pair of half jaws are between the collapsible member and the top opening, sized such that they move towards each other as the jaws are moved toward the bottom opening due to the taper of the void. The top and bottom openings, central passage, and inner surfaces of the jaws define a channel capable of receiving a cable passed through the housing from its bottom to its top opening. When the cable is pulled in the direction opposite that with which it was installed, the half jaws are drawn toward the housing's bottom opening such that their inner surfaces are urged towards each other, thereby locking the cable in place while it is under tension.
Abstract:
Máquina para tensado de cables conductores de líneas eléctricas aéreas, en particular de cables que incluyen un alma formada por un cable de acero, que se tensa entre dos puntos, que comprende una estructura (19), que presenta por un extremo medios de sujección (18) y por el extremo opuesto al menos un cilindro hidráulico o neumático (11) que presenta una segunda estructura (12) soporte, conjuntamente con dicha estructura (19), de sendas retenciones cónicas (13-14) a través de las cuales pasa el alma de acero (21) del conductor (2) que se va a montar, actuando dichas retenciones únicamente en un sentido, de forma que, dispuestas alineadas y en el mismo sentido, al efectuar el cilindro (11) un desplazamiento de compresión la retención montada en el extremo (14) tracciona del cable (21), pero la retención anterior (13) montada en la estructura (1) lo deja pasar libremente; mientras que al retornar el pistón a la posición de distensión es la retención anterior (13) la que retiene el cable (21) mientras que la retención (14) situada en el extremo (12) de dicho pistón desliza a lo largo del cable (21).
Abstract:
The present invention relates to an anchorage device, preferably for fibre composite rods (S), which anchorage device comprises a sleeve (1), with an internal conical space (5), and an at least partly conical wedge element (7) which comprises a central duct (10), whereby in an operative state of the anchorage device the wedge element (7) is accommodated in the sleeve (1) and the fibre composite rod (S) is accommodated in the central duct (10), which wedge element (7) is provided with a first groove (11) which has an extent in both axial and radial directions relative to a central axis (C2-C2) of the wedge element (7), which first groove (11) breaks through to the central duct (10). Distinguishing features of the anchorage device according to the present invention are that the wedge element (7) is provided with at least one second groove (12) which has an extent in both radial and axial directions relative to the central axis (C2-C2) of the wedge element (7), and that there is a first material zone (14) between the central duct (10) and the bottom of the second groove (12).
Abstract:
Beschrieben wird ein Seilzuggerät für ein durchlaufendes Seil (4), umfassend, zwei gegenläufige Klemmsysteme (1, 2), die je nach Bewegungsrichtung das Seil (4) durch Haftreibung automatisch halten oder freigeben. Gemäß der Erfindung sind die Klemmsysteme (l, 2) nach Scharnierart mit Bolzen (3), die unter einem Winkel α geneigt sind, der die einfache Öffnung von Backen (14, 15) erlaubt, indem einer der Bolzen (14, 15) ausgezogen wird, and dass die Klemmsystem (14, 15) außerhalb eines Gehäuses (5), wodurch das Seil (4) ohne Durchfädeln durch geschlossene Teile des Gerätes in eine Position gebracht wird, die das Ziehen ermöglicht.
Abstract:
A fall protection device or cable grab device for use with a generally vertically-extending cable, comprising: an articulating frame comprising: (i) a plurality of members; (ii) a channel configured to receive and retain the cable; and (iii) an attachment member opening extending through at least a portion of the articulating frame and configured to facilitate attachment of an attachment member to the cable grab device; wherein, when the frame is articulated in a generally downward (or first) direction, and at a specified point, at least a portion of at least one of the plurality of members contacts the cable and brakes movement of the cable grab device; wherein, when the frame is articulated in a generally upward (or second) direction, and at a specified point, at least a portion of at least one of the plurality of members contacts the cable and brakes movement of the cable grab device.
Abstract:
Vorrichtung für das feste Ergreifen eines sich durch die Vorrichtung hindurch erstreckenden stangenförmigen, stabförmigen, seilförmigen oder ähnlichen Gegenstandes (1) und für das Verschieben desselben längs einer Richtung längs welcher eine Gegenkraft wirkt, die sich der Verschiebung des Gegenstandes (1) entgegen setzt, wobei die Vorrichtung eine Einspannvorrichtung (2) umfasst, die den zu ergreifendem Gegenstand (1) in ihrem Inneren einspannt. Erfindungsgemäß wirkt die Einspannvorrichtung (2) in nur einer einzigen Richtung, und zwar ist das Gleiten der nur in einer einzigen Richtung wirken den Einspannvorrichtung (2) gegen über dem Gegen stand (1) in der Wirkungsrichtung der Gegenkraft erlaubt, während das Gleiten in der der Wirkungsrichtung der Gegenkraft entgegengesetzten Richtung verhidert wird.
Abstract:
A serpentine shaped wire clip (6) is disposed in a tapered bore of a housing (4) for axial displacement in the bore and has in a preferred embodiment three U-shaped loops interconnected by end portions. The clip (6) has bore dimensioned for receiving a cable (8) or rod in radial resilient compressive engagement along the clip entire length which engagement causes the clip (6) to axial displace with the displacement of the cable (8) or rod. The axial displacement of the clip in the tapered bore wedges the clip (6) to the housing (4) and cable or rod locking the elements. The clip (6) may have any number of loops and wire diameter. Also, the housing may have a cylindrical bore and the tapered region may be formed on a rod or bar. The clip may be locked to smooth and grooved surfaces including threads. The housing and rod each have a different one of a cylindrical surface and tapered surface. The clip radially grips the cylindrical surface while wedging in response to relative displacement of the tapered surface to the cylindrical surface. Preferably the tapered surface is the hardest and the cylindrical surface is the softest when the cylindrical surface is smooth.
Abstract:
Clamp (1) for clamping a cord in tension, in which the clamp comprises a U-shaped elongate frame (2) with an elongate recess and an elongate clamping body (3) which is connected to the frame and extends in the recess of the frame, in which-a cord duct (11) is formed in the recess between the clamping body and a clamping surface (10) of the frame, the clamping body is configured to be carried along by a cord passed through the cord duct, in which the distance between the clamping body and the clamping surface decreases when the clamping body is moved, the clamping body has a widened part (7) at one end and in which a hinge (4) is provided between the legs (6a, 6b) of the frame and the widened part of the clamping body, the axis of rotation of which extends at right angles to the longitudinal direction of the frame.