What are the hand signals for a crane?
Use Whip Line (Auxiliary Hoist): Tap elbows with one hand; then use regular signals. Raise Boom: Arm extended, fingers closed, thumb pointing upward. Lower Boom: Arm extended, fingers closed, thumb pointing downward. Swing: Point with a finger in direction of swing of a boom.
What type of hand signals should be used?
There are three main hand signals that every motorist and cyclist should become familiar with: Left turn, right turn, and slowing down/stopping. To indicate a left turn, extend your left arm out sideways with all your fingers extended.
What is the first element of voice signals given to a crane operator prior to the lift?
What is the first element of voice signals to a crane operators prior to the lift? Function and direction.
Who should give signal to crane operator for lifting?
All workers must be able to fluently speak and understand and communicate in one chosen language. A “lead” man must be designated to direct the lift. The lead man is normally the primary person who communicates with the crane operator.
Who can signal a crane to stop during a lift?
Qualified and trained signal persons must be present before the lift. Only one person should be giving signals to the crane operator unless it is an emergency stop situation – anyone can give the emergency stop signal to the crane operator.
What are the three elements required in every voice signal?
Each voice signal must contain the following three elements, given in the following order: function (such as hoist, boom, etc.), direction; distance and/or speed; function, stop command. The operator, signal person and lift director (if there is one), must be able to effectively communicate in the language used.
Do all lifts require a signal person?
A signal person is required when the point of operation is not in full view of the operator, or the crane operator’s view is obstructed in the direction of where the equipment or load is traveling.
What is the hook on a crane called?
A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane. A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached.
Who can signal a crane?
one person
During crane operation, only one person can give signals, unless it’s for an emergency stop — then anyone on the job site can give the signal, said Lagowski of Columbus McKinnon.
What is the tip of the crane called?
As the main point of connection between the load and the crane, the hook grasps and holds items needing transport.
What is a bridle on a crane?
Bridle. A frame equipped with sheaves and connected to the boom by stationary. ropes called pendants. The bridle is used in conjunction with the boom hoist drum and bail to alter the crane’s boom angle.
What does Reeving mean on a crane?
Answer: A rope reeving is a mechanical device with several pulleys commonly used on lifting equipment. It allows to lift heavy loads while limiting the force applied on the hoisting ropes.
What is a headache ball on a crane?
Headache Balls, also known as overhaul hook balls, are very important devices used in a single line hoist wire rope with the purpose to add weight and help the line to drop down after coming up the crane boom and going over the sheave.