Abstract:
The present invention relates to a wheel (20) for electrical transformer comprising: a support (30) connected to an electrical transformer; an hub (10) configured to be connectable to the support (30), comprising a metallic upper portion (1) and a metallic lower portion (2) coupled each other through at least an intermediate portion (3) made of elastic material suitable for reducing the transmission of mechanical strains and vibrations between said upper and lower portions (1, 2); a wheel (40) connected to the hub (10) in a rotary manner; wherein, when the hub (10) is connected to said support (30), the upper and lower portions (1, 2) are respectively positioned above and below the intermediate portion (3) with respect to the ground. The elastic material of the intermediate portion may be an elastomeric material, or a polyurethanic material, or an elastomeric polyurethane, having an hardness comprises between 40 and 100 shore A.
Abstract:
Rueda elástica para vehículos ferroviarios, formada por una banda de rodadura (1) y un centro (2) de rueda, que definen un alojamiento para la inserción de un elastómero que queda comprimido por un aro (3) de retención que se une al centro (2) de rueda mediante unos tornillos (4) de unión, y en donde el elastómero está formado por una pluralidad de bloques (5) elásticos en forma de "V", presentado dos paredes oblicuas respectivamente pertenecientes al centro (2) de rueda y al aro (3) de retención, que forman un ángulo de entre 48º y 52º respecto del eje (R) de la rueda, y en donde las paredes oblicuas rematan en respectivos tramos inclinados en los queapoyan los vértices de los bloques (5) elásticos en forma de "V", formando dichos tramos inclinados un ángulo de entre 2º y 10º respecto del eje (R) de la rueda.
Abstract:
La présente invention concerne les roulettes. La roulette selon l'invention se caractérise essentiellement par le fait qu'elle comprend un carter (10) constitué d'une pièce (11) comportant au moins un logement 13 apte à recevoir un pivot (14) et défini selon un axe (15), et un palier (16) défini selon un axe (17) perpendiculaire à l'axe (15), au moins une roue (20) apte à rouler sur une surface Sd, un arbre (30) monté en coopération dans le palier (16), la roue (20) étant montée en association avec cet arbre, la pièce (11) étant constituée d'au moins deux parties (101, 102) réalisées respectivement dans deux matériaux de souplesse différente, la partie (102) présentant la plus grande souplesse étant interposée entre le logement (13) et l'orifice axial du palier (16) de façon à isoler l'un de l'autre le logement et le palier. Application aux roulettes pour meubles ou analogues, notamment en milieu hospitalier, par exemple pour lits, tables roulantes, déambulateurs, mais aussi pour le déplacement de valises, bagages ou analogues.
Abstract:
Motor vehicle with at least one profiled rolling surface (11) with a transversal profiling, of which the profiled parts are provided as transverse ribs or the like (12, 13) in the running direction with intervals, said vehicle having good cross-country characteristics and a very silent running when running on plane surfaces. To this effect, the profiled rolling surface is comprised of two subprofiles (11, 11) adjustable with respect to each other in the running direction.
Abstract:
A mobile robot (18) configured to drive on a surface with irregularities, comprising: a chassis having a front end facing a forward direction of travel, a back end, a first side, and a second side. There is a first drive wheel (40) rigidly affixed to the chassis proximate the first side and interconnected to a motor to propel it. There is a second drive wheel (42) rigidly affixed to the chassis proximate the second side and interconnected to a motor to propel it. A first caster assembly (44) is rigidly affixed to the chassis proximate the front end and includes a first caster wheel configured to rotate about a first swivel axis. A second caster assembly (46) is rigidly affixed to the chassis proximate the back end and includes a second caster wheel configured to rotate about a second swivel axis and it includes a compliant member to absorb the irregularities.
Abstract:
A noise-reducing device for a vehicle wheel rim comprises two elements arranged to secure the device around the wheel rim. The elements are arranged to form a closed loop that is a close fit with the wheel rim so that the device is self-retaining on the wheel rim. At least one cavity is formed in one of the elements, the cavity having an opening to provide communication between the cavity and the tyre cavity. The cavity is arranged to define at least in part a chamber that acts as a Helmholtz resonator when the device is installed onto the wheel rim.