A hook block apparatus 10 has an upper part 12 with a sheave assembly 20, a lower part 14 fixed to the upper part and a hook 30 rotatably connected to the lower part. The apparatus has a remotely operable rotator for rotating the hook about a vertical axis. The rotator may have a motor 42 and first and second gears 40, 46 and a rotation sensor 50 to detect the direction of rotation, whilst a vision sensor, such as a camera 70, may sense the orientation of the hook. An image of the hook may be transmitted to a portable device 60 which may act as a controller for the rotator. The rotator may inhibit unintended rotation of the hook or be disengaged to allow free movement of the hook.
Improved Hook block
06.10.2021
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |