Custom Designed Windlass

Tytan Marine design and supply various marine windlasses, and the above model is:

Chain diameter 78mm

Chain standard: Grade U3

Electric driven model.

Single gypsy wheel c/w single warping head.

Horizontal type.

Type and Characteristic of anchor Windlass,

The anchor windlass is mainly composed of base, bracket, anchor chain wheel, brake, sprocket, gearbox, electric control system (other than manual anchor windlass), electric windlass has motor, hydraulic windlass has hydraulic pumping station.

The main technical specifications of the anchor windlass include the diameter of anchor chain, the nominal speed of anchor, the rated load, the supporting load, a few variable speed, electric system and so on.

The installation of the anchor windlass on the ship should ensure that the chain of anchor and sprocket is 117-120 degrees.

The type of anchor windlass can be divided into the diameter of φ 12--φ 120mm and so on.

According to the Drive Mechanism Energy Division------Manual Anchor windlass, steam anchor windlass, electric anchor windlass (DC electric anchor windlass, AC electric anchor windlass), hydraulic anchor windlass (high-pressure hydraulic anchor windlass, medium-pressure hydraulic anchor windlass, low-pressure hydraulic anchor windlass.)

Center line by Sprocket axis-horizontal anchor machine, vertical anchor windlass (winch)

According to the arrangement of the way------ordinary (integral) type anchor windlass, single side (independent) type anchor windlass, joint type anchor windlass.

2. Features of various types of anchor windlasses

A． Manual Anchor Windlass

To the weight of no more than 250kg anchor, according to the work situation, if suitable for use, you can configure the manual anchor machine. The manual anchor machine is currently applied only on inland small ships, and it should prevent the handle from injuring the person.

b． Steam Anchor Windlass

The steam anchor windlass has been widely used in the steam turbine ships, and is currently applied to giant tankers. Its rugged structure, reliable work, no danger of causing fire, but the steam engine efficiency is low, the structure is huge, laying on the deck long pipes when the heat loss is large, the deck on the steam turbine cylinder work pressure generally not more than 0.8MPa, Operation Management Trouble, in the cold weather, the use of the prior to the full warm machine, to drain the residual water.

C． Electric Anchor Windlass

Model 1:

Model 2:

Model 3:

Model 4:

The electric anchor windlass is currently widely used in ships.

According to the power system of ships, electric anchor windlass has DC electric and AC. DC electric anchor windlass speed regulating characteristic is good, the use efficiency is high, but the initial cost is high, the electric brush needs regular maintenance.

AC Electric Anchor windlass speed performance is poor, usually can only have a variable speed, depending on the pole or the motor and anchor windlass between a set of deceleration transmission mechanism to obtain a number of speed grades. This set of deceleration transmission mechanism, due to the need to reduce the ratio of considerable, and considering the speed of gear and anchor windlass work reliability and other problems, the structure is more complex, weight and occupy the area of the deck is larger.

Deceleration transmission device often adopts spherical worm gear drive, spur gear transmission, planetary gear transmission and other transmission mode. Generally speaking, planetary gear reducer transmission mechanism of light weight, small size, high transmission efficiency, maintenance is simple, so the current application more.

D． Hydraulic Anchor Windlass

Model 1:

Model 2:

Model 3:

Model 4:

The hydraulic anchor windlass is the anchor windlass which relies mainly on the hydraulic device to carry out and control the action. Its hydraulic energy from the motor driven oil pump device, also known as Electric hydraulic anchor windlass. It has the following characteristics:

(1) has a good speed regulating performance with the DC Electric anchor machine.

(2) The use of low-speed large torque hydraulic motors, low speed, large output torque, no longer need to set up a large mechanical reducer, can directly drive the chain wheel.

(3) hydraulic transmission has the self-made dynamic performance, the work is safe and reliable.

(4) Compact structure, unit power of the weight and size of small.

(5) Easy operation and maintenance.

(6) Easy to realize remote control and automation

For large and high degree of automation ships, the use of hydraulic anchor windlass to ship the economy and reliability is more favorable. Hydraulic anchor windlass can also be powered by high speed oil motors. High speed oil motors are commonly used in structural bending axial piston oil motors and radial piston (or steel ball) type oil motors or vane type oil motors. The motor body is Small, need to set up a large deceleration device.

The size of the output torque of the oil motor is determined by the working pressure and the single-transfer displacement, i.e.

M=Pq/2p N M,

p--Oil Motors Import and export pressure difference, PA Q-Single transfer, M3/R.

Note: In the same output torque condition, the working oil pressure is inversely proportional to the single-transfer displacement. In order to require the same anchor windlass to choose the oil motor, there are two options:

(1) High oil pressure, low Q value. The Q value is a parameter directly related to the structure size. The Q value is small, the structure size and weight of the oil motor are small. But the pressure is high, sealing is more difficult, work reliability and durability are affected, machining accuracy is also high. General anchor winch with high-pressure oil motor rated working pressure ≥ 14MPa.

(2) Low oil pressure, high Q value. The structure of oil motor size and weight is large, but low pressure, easy sealing, processing precision requirements to achieve, stable work, high reliability, long service life. General anchor winch with low-pressure oil motor rated working pressure around 3MPa. The Nordic countries use low-pressure oil motors earlier, and are still widely used.

In recent years, a kind of medium-pressure structure has emerged in marine hydraulic winch. It is put forward on the basis of comprehensive analysis high, low voltage, advantages and disadvantages, not only considering the safety and reliability of the use of marine deck machinery, but also properly cared for the compact and practical structure. For example, Japan IHI pressure-type hydraulic winch, its rated working pressure around 7MPa.

Hydraulic anchor windlass by three main parts

Electrical parts, hydraulic parts and anchor mechanical equipment composition.

electric motors and oil pumps constitute energy devices,

General and electrical equipment in the cabin,

Oil motors and Anchor machinery equipment

On deck, using pipelines between the two

Connection。

E. Horizontal Anchor Windlass

Horizontal anchor windlass sprocket shaft and reel shaft centerline parallel to the deck, the entire set of anchor equipment installed on deck, operation management is more convenient. But the equipment occupies a large deck area, and is prone to storm erosion. The general merchant shipping more adopts horizontal anchor machine.

F. Vertical Anchor Windlass (winch)

The sprocket shaft and reel shaft centerline of the vertical anchor is perpendicular to the deck. Both the original motive and the transmission mechanism are placed under the deck, only the sprocket and reel are stretched out on the deck and guided by the vertical shaft. There is no horizontal anchor windlass occupy the deck area large and vulnerable to the disadvantages of erosion, but the vertical shaft of the chain wheel is subjected to a great bending torque, management is not convenient. More vertical anchor windlasses are used on warships.

G． General (integral) type anchor windlass

One or two prime motors are centered, and the two chains are arranged on the left and right sides respectively. The prime motor and the anchor chain wheel share a base, is called the Integral anchor machine, the prime motor and the anchor chain wheel base separates, then is called the separating type ordinary anchor windlass.

H. Single side (independent) type anchor windlass

An prime motor only configures one anchor chain wheel, reel and brake device, forming an independent unit, called a single side anchor windlass. Also known as independent anchor windlass. The single side anchor is arranged on both sides of the bow deck. According to the different position, there are right-type anchor windlass and left-type anchor windlass.

I. Joint type Anchor Windlass

The two single-side anchor windlass is combined to form a whole, called the joint anchor windlass. Either side of the anchor wheel can be driven by either one of the prime motor, two prime motors, and enhance the vitality of the anchor windlass.

J． Self Brake Anchor Windlass

The whereabouts of anchors and anchor chains are freely falling in nature. The deeper the anchor is, the quicker it falls. When the deep water anchors, the anchor meets the hard bottom, the impact is very large, prone to damage. The whereabouts speed accelerated, the chain is beating sharply on the sprocket, increase the possibility of"slip chain job-hopping", but also can produce sparks. For large ships, anchor and anchor chain weight is very large, the general anchor windlass brake equipment has been unable to effectively control the whereabouts of the speed, especially deep-water anchor operation, prolonged intense friction, can lead to the anchor machine fever and burn damage. In this case, a self-made anchor windlass is needed. The self-brake anchor windlass is used to add hydraulic brake to the anchor equipment.

When the anchor and anchor chain fall, the moving impeller in the hydraulic brake is rotated through the gear drive and the brake shaft. The impeller is filled with oil fluid between the two sides.

When the impeller rotates, the oil is in the middle of the brake function, as the hydraulic dynamometer. The liquid-force brake converts the kinetic energy into the heat of the oil, through the tank circulating heat, so that the oil temperature does not rise excessively. The energy of anchor and anchor chains is absorbed and emitted, and the whereabouts of anchor and anchor chains are controlled. * Self-made steam anchor windlass mounted on 240,000 DWT tanker. Using hydraulic brake as the self braking device when the sea depth more than 50m, the anchor drop speed with hydraulic brake is 3.5m/s, on the other side the anchor drop speed will be 11m/s without hydraulic brake.

The hydraulic brake is filled with enough oil, the bearing of the shell is immersed in the oil, the lubrication conditions are good. Longer time braking, no high fever or burn damage accidents. For tankers, the risk of explosion can be reduced.

In modern oil tankers, the use of automatic brake steam anchor windlass.