Marine windlass

A windlass is a mechanical device for casting, hoisting and winching lines, located at the bow of a ship. The rollers on both sides of the sprocket can be used for twisting the cable. Windlass according to different power can be divided into manual windlass, electric windlass, electric hydraulic windlass and steam windlass. At present, the sea ship anchor machine to electric hydraulic anchor machine and electric anchor machine mainly. In the early construction of oil tankers, for fire and explosion protection, there are also steam windlass. In order to control the operation of the windlass, the power windlass is equipped with a master controller, which can carry out reversing operation and multistage variable speed control.

Manual (manual) windlass is suitable for ships whose anchor mass does not exceed 250kg, and measures should be taken to prevent injury by the handle.

The power source of Electric Windlass is the motor, which drives the spindle to rotate after multi-stage deceleration through the large and small gears in the reducer box. Due to the high requirement of deceleration ratio, the deceleration mechanism is large and mainly used for small and medium-sized ships.

Electro-hydraulic Windlass (electro-hydraulic windlass), also known as hydraulic Windlass, is driven by the motor hydraulic pump, the generated oil pressure drives the oil motor, and then through the reducer (or no reducer) to make the windlass operate. It has compact structure, small size of power and transmission part, smooth operation, good speed performance, but high manufacturing technology and maintenance requirements, and is widely used for modern large and medium-sized ships.

The steam windlass is driven by the steam engine, and the drum shaft is driven by the gear through the crank shaft. It is characterized by large power and simple structure. When using steam anchor, the cylinder should be warmed in advance, and the residual water vapor in the cylinder should be drained after use. When the weather is cold, the car should be run (keep idling) to protect against freezing.