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US 10,703,610 B2Granted
Lifting bracket
AssigneeLiftra IP Aps
InventorPer Fenger
Life of this patent
Estimating the term…
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AssigneeLiftra IP Aps
InventorPer Fenger
Estimating the term…
A lifting tool used during lifting and mounting of a rotor blade on a rotor hub of the wind turbine which facilitates repositioning of the crane's main wire. Thus, a lifting bracket, having an elongated element with a first through-going outlet configured to take up a part of a first link, which is connected with the main wire, and a second through-going outlet configured with a spherical bearing to take up a part of a second link on the load, and wherein the elongated element adjacent to the spherical bearing is provided with a measuring instrument with a signal transmitter for registering the angle between the lifting wire and the vertical direction, wherein the signal transmitter is configured to transmit a signal containing measurements for visualization on an external unit with a screen placed at the crane operator and/or near the crane supervisor.
A lifting bracket for attachment between a main wire of a crane and a load suspended on the main wire, wherein a lengthwise axis of the main wire is defined as a Y-axis, and a plane perpendicular to the Y-axis contains the X- and Z-axes, the lifting bracket comprising:
Dependencies are inferred from the claim text.