Tower crane; command; gesture
1. prepare (note): arm extension, placed above the head, five fingers stretched out naturally, palm forward remain motionless.2. main hook: single hand natural fist, in the head, touch the head3. auxiliary hook: a hand clenched, small arm to immobile on the other hand, elbow, hand hand touch before.4. hook up: small arm to the side of the upper extension, five fingers natural extension, higher than the shoulder, with the wrist as the axis rotation.
8. the hook falls slightly: the arm extends to the side, front and bottom, with the angle of the body about 30 degrees, palm down, with the wrist as the axis, repeatedly swinging downward palm.9. hook horizontal move slightly: small arm toward the side of the natural extension, fingers together, palms outward, in the direction of the load should be running, repeat the slow horizontal movement.10., micro range: double arm bent, extended to one side, five fingers straight, palms relative, and the distance between the load and the distance to move.11. directions of landing: five fingers unbend, point out the position where the load should fall.12. stop: small arm horizontally placed in front of the chest, fingers outstretched, palms down, horizontal swing to the side.13. emergency stop: two small arm level placed in his fingers outstretched, palms downwards, while waving to the level of both sides.14. end of work: stretch your hands and fingers and cross over at the front of your forehead.
5. hook down: arm stretched to the front, lower, and the body with an angle of about 30 degrees, five fingers stretched out naturally, with the wrist as the axis rotation.6. hook horizontal movement: small arm side to side straight, fingers together, palms outward, toward the direction of the load should be moving down to the shoulder level position.7. the hook rises slightly: the small arm extends to the top of the side, the top of the palm is higher than the shoulder, the wrist is the axis, and the palms swing upward repeatedly.
