Patent ID: 9365397
Filing Date: 2016-06-14
CPC Classification: B66C,F16F

Claim Text:
1. A quay crane having a direction of travel and including a seismic isolation device, wherein the seismic isolation device has a top plate side and a bottom plate side and comprises: laminated rubber formed of alternating steel plate and rubber material layers laminated together, the laminated rubber being deformable in the direction of travel of the crane and a lateral direction perpendicular to the direction of travel of the crane and defining a horizontal plane therewith, in response to an external force, the laminated rubber having a top and a bottom; and an auxiliary support mechanism configured to support force in a vertical direction, the auxiliary support mechanism including: wherein the first part and the second part constituting the auxiliary support mechanism are configured to come into contact with each other only upon deformation of the laminated rubber by an external force, and the auxiliary support mechanism supports a weight of the quay crane by means of the configuration which supports force in the vertical direction.