摘要:
The invention concerns a device for opening, in particular, scissor-type jack mechanisms with paired cross-bars, the device having a chamber (8) of variable volume constituted by an elastic bellows. The chamber is connected to hydraulic-fluid inlet and outlet and has two end plates (16, 17) to which are fixed cover plates (6, 7) each of which has two flanges (13, 13', 14, 14') disposed on opposite sides of the cover plate and extending towards the other cover plate. The distance between the two flanges (13, 13') of one cover plate (6) is greater than the distance between the two flanges (14, 14') of the second cover plate (7), and both pairs of flanges (13, 13', 14, 14') are fitted with coaxially disposed devices (9, 9', 11, 11') connecting them rotatably with the jack mechanism. The axes of the coaxially disposed connection devices (9, 9') on each of the cover plates (6, 7) cut the line (18) joining the centroids of the two end plates (15, 16) of the chamber (8) at a point between the two end plates (15, 16).
摘要:
A self-adjusting load elevator (20) has a base (20b), a horizontal load platform (20a), a vertically expandable scissors linkage (30, 32) coupled between the load platform and the base, and an air actuator chamber. The air actuator chamber is formed of a compressible bellows (34) and a fixed volume reservoir (R). The bellows is compressible between specified maximum and minimum bellows heights which correspondingly determine substantially different maximum and minimum bellows volumes and coupled between the scissors linkage and the load platform. The air reservoir is coupled to the bellows and has a fixed volume that is substantial compared to the difference between the maximum and minimum bellows volumes. A normally closed air inlet/outlet valve (v) is coupled to the air actuator.
摘要:
The invention concerns a lifting platform (1) for light vehicle maintenance and repair, such as quads, motorcycles, lawn mower tractors or the like, of the type comprising a load-bearing platform and a lift mechanism (2) acting on said load-bearing platform, said load-bearing deck with longitudinal axis viewed in the displacement direction of a vehicle on the surface of said platform, consisting of a number of decks (3, 4, 5) co-operating with a bearing chassis (6). Said lifting platform is characterized in that the decks (3, 4, 5) of the load-bearing platform are mobile decks (3, 4, 5), optionally removable, sliding on said chassis (6) along a direction orthogonal to the longitudinal axis of said platform to provide a bearing area with adjustable surface.
摘要:
Load handling apparatus such as a lifting device has a movable platform on to which goods can be loaded that is movable relative to a base by at least one inflatable bag. The bag defines an internal inflation chamber and is disposed between the platform and the base such that upon inflation of the bag the platform is raised relative to the base. The bag is configured such that the inflation chamber is in the form an endless loop, or alternative has ends with seams that are configured to be loaded in shear when the bag is inflated. The bag is folded so as to define a plurality of superposed bag portions such that the chamber is divided into a plurality of interconnected and stacked sub-chambers. The device is simple, compact and stable. The bag has improved lifting capacity and is less prone to leakage. A trailer or vehicle has at least one load-carrying platform that is supported on a lifting mechanism that comprises at least one scissor linkage movable between collapsed and extended positions. A pair of vertically spaced panels are each coupled to the scissor linkage at a position between a surface on which the mechanism is supported and the platform by a coupling arrangement that permits relative movement between the linkage and the panels during movement between the collapsed and extended positions. An inflatable bag comprising a plurality of compartments in fluid communication with one another is disposed between the panels such that inflation of the bag causes the panels to be forced apart so that the scissor linkage is moved to the extended position and the platform raised.
摘要:
Un écarteur, notamment pour mécanismes de levage à leviers disposés par paires, comprend une chambre (8) de volume variable formée par un soufflet élastique et susceptible d'être racordée à l'amenée et à la sortie d'un milieu sous pression. La chambre comprend deux fonds (16, 17) sur lesquels sont fixés des couvercles (6, 7). Les fonds (16, 17) sont pourvus de deux languettes opposées (13, 13', 14, 14') orientées vers les couvercles opposés (6, 7). L'écartement entre les languettes opposées (13, 13') du premier couvercle (6) est supérieur à l'écartement entre les languettes opposées (14, 14') du deuxième couvercle (7). Les deux languettes opposées (13, 13', 14, 14') sont pourvues d'éléments coaxiaux (9, 9', 11, 11') qui forment des liaisons rotatives avec le mécanisme à leviers. Les axes des éléments coaxiaux (9, 9', 11, 11') de chaque couvercle (6, 7) coupent la ligne de connexion (18) entre les centres de gravité de la surface des deux fonds (15, 16) de la chambre (8), à un point situé entre ces fonds (15, 16).
摘要:
L'invention a pour objet un dispositif de support extensible, dont l'allongement et le raccourcissement résultent de l'actionnement d'une pompe à air et d'une valve. Le dispositif comporte une chambre à air (15), constituée, à l'extérieur d'un corps tubulaire (6), par la surface d'une membrane simple (17) et de la surface intérieure d'un cylindre (16), et positionnée de façon à maximiser le rendement de l'actionnement latéral d'une tige (14), guidée par le corps du cylindre (24), et qui actionne à son tour une plaque (3) intégrée au corps tubulaire mâle (6) d'un dispositif télescopique (1), et maintenue parallèle par rapport à la paroi (7) qui lui est opposée dans le corps tubulaire, et à permettre ainsi l'allongement/le raccourcissement d'un système de pans articulés (5) de faible largeur, en accordéon, complétés de pans symétriques (4), de manière à définir des croisillons articulés autour d'axes (11) pouvant occuper toute la hauteur du dispositif télescopique avant et après son extension. Ce dispositif, utilisé comme piétement est particulièrement adapté à l'obtention d'une proclive/déclive et/ou d'une surélévation pour des lits utilisés en milieu hospitalier.
摘要:
Modular salvage system, wherein it comprises a first and at least a second inflatable lifting cushion (20), a connecting collar (10, 11, 12) on upper side and underside as well as between each successive lifting cushion for the purpose of accommodating the inflatable lifting cushion in enclosing manner, wherein the connecting collar is provided on a peripheral side with i attachment points pivotally connectable to a first and a second radial shackle (30, 31), which first radial shackle is pivotally connectable on the one hand to the connecting collar and on the other comprises a coupling segment (32), which coupling segment is pivotally connectable to a second radial shackle of an uppermost connecting collar and wherein each coupling segment is connectable in axial direction to a subsequent uppermost coupling segment by means of an axial shackle (35), and wherein the axial shackle comprises a first and second bending-resistant segment (36, 37) between which a flexible segment (38) extends, wherein the tensile strength of the first and second bending-resistant segments and that of the flexible segment are substantially equal to each other. Additionally a lifting module as applied in such a modular salvage system is claimed and a container comprising components of such a modular salvage system and a method for assembling such a modular salvage system.
摘要:
A pneumatic system with multiple air reservoirs (22,24,26) is connected to the bellows (18) of a load elevator (10). A plurality of valves (28,30) enables the optional pneumatic connection of different combinations of reservoirs so as to change the range of operation of the elevator to meet the self-adjusting weight requirements of a particular job at hand. In the preferred embodiment, the air actuator (18) is pneumatically connected to a main air reservoir (22), which in turn can optionally be coupled in series with one or two additional reservoirs (24,26) of different capacities. As a result of this configuration of its pneumatic system, the elevator (10) can be switched between and operated at three different load levels, at the convenience of the operator, without changing the amount of air in the system.
摘要:
A lifting device (1), particularly for lifting wheels of vehicles and the like, for wheel balancing and tire removing machines, comprising a scissor-like frame (2), which is interposed between at least two flat and mutually parallel elements (3, 4) for their mutual translational motion as a consequence of the action of motor means (5) functionally associated with the scissor-like frame (2), the lifting device further comprising cam-type profiled means (7), which can be engaged functionally with the motor means (5) for dynamic and static balancing between the thrust force generated by the motor means (5) and the contrast force of the scissor-like frame (2) in addition to the weight of the object (6) to be lifted, which is arranged on one of the two flat and parallel elements (3, 4), in all the operating positions of the lifting device (1).