Abstract: A crane camera system employs a hook camera transmitter to send wireless signals vertically upward to a trolley receiver, which are then relayed by a trolley transmitter to the operator cabin. This allows line-of-sight wireless transmission of signals from the hook to the cabin to take place reliably without interference from obstructions on the work site. It is especially suitable for a tower-type overhead or boom-type crane. A trolley camera may also be provided for taking look-down images of the hook and transmitting them to the cabin in tandem with the hook camera signals. The hook and trolley camera images allows the operator to see more precisely the positioning of the hook relative to the ground, thereby greatly reducing the possibility of accidents or damaging collisions with persons or objects on the ground.

Abstract: A crane camera system employs a hook camera transmitter to send wireless signals vertically upward to a trolley receiver, which are then relayed by a trolley transmitter to the operator cabin. This allows line-of-sight wireless transmission of signals from the hook to the cabin to take place reliably without interference from obstructions on the work site. It is especially suitable for a tower-type overhead or boom-type crane. A trolley camera may also be provided for taking look-down images of the hook and transmitting them to the cabin in tandem with the hook camera signals. The hook and trolley camera images allows the operator to see more precisely the positioning of the hook relative to the ground, thereby greatly reducing the possibility of accidents or damaging collisions with persons or objects on the ground.