Fairlead roller is an important part of ship mooring device, its function is, in ship berthing and mooring buoy process, via the rotation of the cable roller guide nylon rope or wire rope mooring ropes to fasten a boat to a pier or float. Generally large and medium-sized ship mooring device is equipped with dozens of guide cable roller, million tons a Panamax bulk carrier with 40 roller fairleader fairleader, which were composed of horn roller fairleader fairleader, combination of double roller and four roller devices are arranged in the bow and stern.
The so-called guide roller is a basic working cycle of the guide cable roller is completed by the four stroke, that is, the crankshaft to two rpm. When the guide roller is working, the piston moves back and forth in the cylinder, and the motion is changed into the rotary motion of the crankshaft through the crank connecting rod mechanism. The top of the piston in the cylinder in the cylinder to achieve the highest point known as the top dead point, and the movement of the cylinder to achieve the top position known as the next stop point. The piston moves from top to bottom, or from bottom to top, to be a stroke. Each turn of the crankshaft, the piston back and forth with two strokes.
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