B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
B66C 3/00 (2006.01) B66C 13/06 (2006.01) F16F 7/04 (2006.01)
Patent
CA 2366291
An arrangement relating to a swing damper, particularly a swing damper (1) for carrying a tool (5) that hangs from a crane jib (2) or the like. The swing damper (1) has an upper part (11) that is connected to the crane jib (2), and a lower part (12) that is connected to a work tool (5) or some similar device, either directly or via a rotator (4) for instance. The upper part (11) and the lower part (12) are pivotally interconnected via a slewing joint (13). A brake arrangement (50) included in the swing damper (1) comprises at least one break disc (60) and at least one brake unit (70) that coacts with said disc. The brake disc (60) is either carried by the upper part (11) or the lower part (12) of the swing damper, whereas the brake unit (70) is carried by that part which does not carry the brake disc. The brake disc (60) includes a slot (64) through which a brake unit fastener device (71) extends. The brake unit (70) includes at least two brake components (72), each being placed on a respective side of the brake disc (60). The brake components (72) are pressed into braking abutment with the brake disc (60), by means of spring devices (73) or by a pressure medium adapted to act between the fastener device (71) and the brake components (72). The invention also relates to a method.
L'invention porte sur un dispositif relatif à un amortisseur d'oscillations, et en particulier à un tel amortisseur (1) portant un outil suspendu à la flèche (2) d'une grue ou analogue. Ledit amortisseur présente une partie supérieure (11) reliée à la flèche (2) et une partie inférieure (12) relié à l'outil (5) ou analogue, soit directement soit par exemple via un rotateur (4). La partie supérieure (11) et la partie inférieure (12) sont reliées par un joint tournant (13). Un dispositif de freinage (50) faisant partie de l'amortisseur (1) comporte au moins un disque (60) de frein et au moins une unité (70) de frein coagissant. Le disque (60) est solidaire soit de la partie supérieure, soit de la partie inférieure de l'amortisseur, tandis que l'unité de frein (70) l'est de la partie non solidaire du disque. Le disque (60) comporte une fente (64) que traverse un boulon (71) de serrage de l'unité de frein (70). L'unité de frein (70) comprend au moins deux éléments (72) disposés chacun d'un des côtés du disque. Ces éléments, comprimés par un système de ressorts (73) ou un système produisant une pression s'exerçant entre le boulon (71) et les éléments (72), viennent buter contre le disque assurant ainsi le freinage. L'invention porte également sur un procédé.
Harr Joakim
Jonsson Anders
Jonsson Christer
Indexator Ab
Ridout & Maybee Llp
LandOfFree
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