Abstract:
With an apparatus for the shock absorption of rope structures, in particular for rockfall, land slide and snow barriers, at least one intermediate piece (1; 1′) deformable by tensile forces is provided which is accommodated within a rope subjected to tension. The intermediate piece (1, 1′) comprises one or more longitudinal elements (7, 8, 20) which can respectively be in the form of a strip, bar, wire, rope and/or strand. The longitudinal element or elements (7, 8, 20) are connected by their one end (7a, 8a; 20a) to the one rope end. On the other hand, they are guided about a deflection element (10; 10′) connected to the other rope end. Means are provided by means of which the deflection angle of the longitudinal element or elements formed upon loading the intermediate piece (1, 1′) is substantially sustained. The shock absorption characteristics can thus be better defined and optimised.
Abstract:
A control device, including a transmission shaft adapted to be coupled to an apparatus to be controlled, a driving disk mounted on said transmission shaft to rotate thereon and driven in rotation by a motor unit, a driven disk constrained to rotate with said transmission shaft, and a rotary member carrying at least one indexing means which, due to rotation of said rotary member, can be simultaneously engaged into two respective slots of said two disks for said transmission shaft to be driven in rotation, and can be disengaged from one of said slots for said transmission shaft to be locked against rotation.
Abstract:
A control device, including a transmission shaft adapted to be coupled to an apparatus to be controlled, a driving disk mounted on said transmission shaft to rotate thereon and driven in rotation by a motor unit, a driven disk constrained to rotate with said transmission shaft, and a rotary member carrying at least one indexing means which, due to rotation of said rotary member, can be simultaneously engaged into two respective slots of said two disks for said transmission shaft to be driven in rotation, and can be disengaged from one of said slots for said transmission shaft to be locked against rotation.
Abstract:
A control device (10) for an electrical switchgear with three switching positions, of the type comprising a closed position, an open position and an earthing position, comprising a main shaft (14) and a drive shaft (28), comprises: a mode selector lever (30) designed to select one operating mode among the >, the > and the >, that comprises an opening with a curved contour, and a cam disk (50) with a cam (54) capable of moving inside said opening (40). Application to an isolating switch.
Abstract:
The spring-loaded mechanical control mechanism for a circuit-breaker in a high-voltage or medium-voltage grid comprises a toothed wheel turned by a spring from a first angular position to a second angular position, and a cog wheel co-operating with the toothed wheel to displace it from the second angular position to the first angular position so as to tension said spring. The toothed wheel has a peripheral set of teeth including a retractable segment on which at least four teeth are spaced apart from one another at a constant pitch identical to the pitch of the primary teeth.
Abstract:
A method of manufacturing an anchor element for a soil anchor or rock anchor, rock bolt or the like, from a strand of twisted steel wire. The anchor element includes a central wire and outer wires arranged radially relative to the central wire. The anchor element has at least one expanded section obtained by spreading the individual wires. Spacer members are provided for fixing the individual wires in the spread-apart position. The central wire is laterally deflected when the individual wires of the strand are being spread and, by inserting a rod-shaped spacer element, the central wire is fixed in an out of center position together with at least one outer wire.
Abstract:
A corrosion-protected support element for a soil anchor or a rock anchor or a pressure pile includes a support member which is provided with a tubular casing. The hollow space between the support member and the casing is filled out by a hardening material, for example, cement mortar. The tubular casing is a plastics material tube, for example, of PE, which extends over the entire length of the support member. The plastics material tube has the same cross-section over its entire length. In the region of force-transmission between the support member and the bore hole in which the support element is placed, the plastics material tube is deformed at spaced-apart locations to deviating cross-sections having different transverse extensions.
Abstract:
With an apparatus for the shock absorption of rope structures, in particular for rockfall, land slide and snow barriers, at least one intermediate piece (1; 1′) deformable by tensile forces is provided which is accommodated within a rope subjected to tension. The intermediate piece (1, 1′) comprises one or more longitudinal elements (7, 8, 20) which can respectively be in the form of a strip, bar, wire, rope and/or strand. The longitudinal element or elements (7, 8, 20) are connected by their one end (7a, 8a; 20a) to the one rope end. On the other hand, they are guided about a deflection element (10; 10′) connected to the other rope end. Means are provided by means of which the deflection angle of the longitudinal element or elements formed upon loading the intermediate piece (1, 1′) is substantially sustained. The shock absorption characteristics can thus be better defined and optimised.
Abstract:
Device for absorbing kinetic energy of a moving body includes a plastically deformable helical spring having a stack of convolutions, the inner surfaces of which delimit a passage. At least a part of the convolutions can be pulled successively through the passage. Due to the resulting deformation of the convolutions, energy can be absorbed.
Abstract:
The device (1) for absorbing kinetic energy of a moving body comprises a plastically deformable helical spring having a stack of convolutions (9a), the inner surfaces of which delimit a passage. At least a part of the convolutions (9a) can be pulled successively through the passage. Due to the resulting deformation of the convolutions (9b), energy can be absorbed.