Product Description

Offshore Crane BV Marine Crane BV Marine Lifting Crane 

Cargo Marine Handling Port Crane

Telescopic boom cranes can be hydraulic extended and retracted without a knuckle function.These cranes should always be executed with a hoisting winch installation.

1.Telescopic Marine Crane is composed of base, arm frame, tower, hydraulic winch,telescopic oil cylinder, Amplitude oil cylinder, hydraulic rotary mechanism, operating platform, hydraulic transmission parts, electric controlling part and etc.

2.The base is cylinder structure, can be welded on the deck, also can connect with deck by high strength bolts. Connection mode must to be marked.

3.Arm frame and tower are box structure. Hydraulic winch controls the goods rising and drop.Telescopic oil cylinder controls level the telescopic crane boom. Amplitude oil cylinder controls goods correct hook-on point and landing point.

4. Swing mechanism for controlling crane turning right or left turn. Operation platform is used for operation and maintenance debugging. Hydraulic transmission parts for the system to provide pressure oil; The electrical control system mainly control motor stops,operation.

 Technial Specification:

SWL 25ton
Max working radius Max 35m
Min working radius 6m
Heel/trim 50/20
Hoisting speed 0-20m/min(<=25t)& 0-40m/min(<=10t)
Slewing speed 0.5r/m
Slewing angle <3600(with limited)
Luffing time 100s
Hoisting height 45m
Pressure 25Mpa
Power source 380v50hz3p
Grab bucket 12m3
Maximum opening size 5.3m
Max height 5.2m
Head size 3500*2450mm
Total Weight ~78ton(with grab)

Main Features And Advantages

The availability of a telescopic or fixed jib extension on a telescopic boom is not only easy to attach and use, but it makes it possible to extend the reach of the crane boom by as much as 40 meter. With a jib, boom cranes are capable of reaching boom lengths as tall as 35 meter, which is very beneficial when placing loads at height or lifting personnel by using a basket.

 

Cargo Marine Handling Port Crane

1. Compact design

2. Small footprint

3. Delivered as 1 complete unit ready for installation to vessels

4. Easy access for periodic maintenance, service and repair

5.24 hours after-sales service support.

 Configuration Options

Standard  equipment

#  360 C* continuous rotation.

#  -10 C*—-+45 C* working temperature.

#  certified A36 & S690 steel structure.

#  pedestal ready for mounting or weld to vessel main structure .

#  stainless steel grease nipples.

#  precise step less speed control.

#  simultaneous operations of 2 or more function.

#  emergency for hydraulic stop device.

#  visual and audible warning alarm.

Optional equipment

#  lower temperature package up to -40 C*.

#  certification for personal lifting.

#  wireless  remote  control

#  operator cabin with AC and heating.

#  ATEX package and certification.

#  man riding winch.

#  centralized grease system.

#  multiple setting of load limiting system.

#  automatic overload protection system .

#  warning and working lights.

#  load indicator system.

#  other CZPT request.

Rotatory Motor
offer capacities of high pressure and high torque in the wide of applications.
Advanced design in disc distribution flow, which can automatically compensate in operating with high volume efficiency and long life, provide smooth and reliable operation.
Control Valve
Our marine crane use hydraulic control valve ,DANFOSS,HC or XIHU (WEST LAKE) DIS.C.
Can provide Continuously variable speed operation
Achieve precise control of the crane
Suitable for long-term use at sea
After-sales guarantee
Hydraulic Pack
SIEMENS or ABB motor are chosen with IP5 level of protection. It can bear water from any direct and has a stable power output it  more reliable and safe than others and can work in high temperature and low temperature environment.
Slewing Bearing
Slewing bearing is equipped with a leak tight seal between the rotary rings, to prevent water and dust entering the tracks. All our rotation bearings screws tightened by highest standard dynamo metric bolt so it’s very safe.
Electric Control Case
We use French Schneider it can bear a long working time and high or low temperature so it’s have a long service life and safe on the sea.

Please provide following necessary information,so we can quote right Model crane.

1. What kind of marine crane do you need(stiff boom crane, telescopic boom crane knuckle boom crane knuckle telescopic crane or folding boom crane )

2. Crane SWL requested(___ T/___M)

3. Max. working radius of the crane(___M)

4. The crane will be used on ship, offshore platform or fixed platform (motor 380V or 440V)

5. If you have any other special request for the crane, please advise us, we will design the suitable model for you. 
 
 

 

Operation Form: Ground Operation
Warranty: 1 Year
Certification: CE, ISO9001, BV
Max Lifting Capacity: 20000kg
Max Lifting Momen: 50t.M
Max Working Radiu: 15.5m
Customization:
Available

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Customized Request

gearbox

Key Market Insights Related to Worm Reduction Gearboxes

A gearbox is a mechanical device that allows you to shift between different speeds or gears. It does so by using one or more clutches. Some gearboxes are single-clutch, while others use two clutches. You can even find a gearbox with closed bladders. These are also known as dual clutches and can shift gears more quickly than other types. Performance cars are designed with these types of gearboxes.

Backlash measurement

Gearbox backlash is a common component that can cause noise or other problems in a car. In fact, the beats and sets of gears in a gearbox are often excited by the oscillations of the engine torque. Noise from gearboxes can be significant, particularly in secondary shafts that engage output gears with a differential ring. To measure backlash and other dimensional variations, an operator can periodically take the output shaft’s motion and compare it to a known value.
A comparator measures the angular displacement between two gears and displays the results. In one method, a secondary shaft is disengaged from the gearbox and a control gauge is attached to its end. A threaded pin is used to secure the differential crown to the secondary shaft. The output pinion is engaged with the differential ring with the aid of a control gauge. The angular displacement of the secondary shaft is then measured by using the dimensions of the output pinion.
Backlash measurements are important to ensure the smooth rotation of meshed gears. There are various types of backlash, which are classified according to the type of gear used. The first type is called circumferential backlash, which is the length of the pitch circle around which the gear rotates to make contact. The second type, angular backlash, is defined as the maximum angle of movement between two meshed gears, which allows the other gear to move when the other gear is stationary.
The backlash measurement for gearbox is one of the most important tests in the manufacturing process. It is a criterion of tightness or looseness in a gear set, and too much backlash can jam a gear set, causing it to interface on the weaker part of its gear teeth. When backlash is too tight, it can lead to gears jamming under thermal expansion. On the other hand, too much backlash is bad for performance.

Worm reduction gearboxes

Worm reduction gearboxes are used in the production of many different kinds of machines, including steel and power plants. They are also used extensively in the sugar and paper industries. The company is constantly aiming to improve their products and services to remain competitive in the global marketplace. The following is a summary of key market insights related to this type of gearbox. This report will help you make informed business decisions. Read on to learn more about the advantages of this type of gearbox.
Compared to conventional gear sets, worm reduction gearboxes have few disadvantages. Worm gear reducers are commonly available and manufacturers have standardized their mounting dimensions. There are no unique requirements for shaft length, height, and diameter. This makes them a very versatile piece of equipment. You can choose to use one or combine several worm gear reducers to fit your specific application. And because they have standardized ratios, you will not have to worry about matching up multiple gears and determining which ones fit.
One of the primary disadvantages of worm reduction gearboxes is their reduced efficiency. Worm reduction gearboxes usually have a maximum reduction ratio of five to sixty. The higher-performance hypoid gears have an output speed of around ten to twelve revolutions. In these cases, the reduced ratios are lower than those with conventional gearing. Worm reduction gearboxes are generally more efficient than hypoid gear sets, but they still have a low efficiency.
The worm reduction gearboxes have many advantages over traditional gearboxes. They are simple to maintain and can work in a range of different applications. Because of their reduced speed, they are perfect for conveyor belt systems.
gearbox

Worm reduction gearboxes with closed bladders

The worm and the gear mesh with each other in a combination of sliding and rolling movements. This sliding action is dominant at high reduction ratios, and the worm and gear are made of dissimilar metals, which results in friction and heat. This limits the efficiency of worm gears to around thirty to fifty percent. A softer material for the gear can be used to absorb shock loads during operation.
A normal gear changes its output independently once a sufficient load is applied. However, the backstop complicates the gear configuration. Worm gears require lubrication because of the sliding wear and friction introduced during movement. A common gear arrangement moves power at the peak load section of a tooth. The sliding happens at low speeds on either side of the apex and occurs at a low velocity.
Single-reduction gearboxes with closed bladders may not require a drain plug. The reservoir for a worm gear reducer is designed so that the gears are in constant contact with lubricant. However, the closed bladders will cause the worm gear to wear out more quickly, which can cause premature wear and increased energy consumption. In this case, the gears can be replaced.
Worm gears are commonly used for speed reduction applications. Unlike conventional gear sets, worm gears have higher reduction ratios. The number of gear teeth in the worm reduces the speed of a particular motor by a substantial amount. This makes worm gears an attractive option for hoisting applications. In addition to their increased efficiency, worm gears are compact and less prone to mechanical failure.

Shaft arrangement of a gearbox

The ray-diagram of a gearbox shows the arrangement of gears in the various shafts of the transmission. It also shows how the transmission produces different output speeds from a single speed. The ratios that represent the speed of the spindle are called the step ratio and the progression. A French engineer named Charles Renard introduced five basic series of gearbox speeds. The first series is the gear ratio and the second series is the reverse gear ratio.
The layout of the gear axle system in a gearbox relates to its speed ratio. In general, the speed ratio and the centre distance are coupled by the gear axles to form an efficient transmission. Other factors that may affect the layout of the gear axles include space constraints, the axial dimension, and the stressed equilibrium. In October 2009, the inventors of a manual transmission disclosed the invention as No. 2. These gears can be used to realize accurate gear ratios.
The input shaft 4 in the gear housing 16 is arranged radially with the gearbox output shaft. It drives the lubricating oil pump 2. The pump draws oil from a filter and container 21. It then delivers the lubricating oil into the rotation chamber 3. The chamber extends along the longitudinal direction of the gearbox input shaft 4, and it expands to its maximum diameter. The chamber is relatively large, due to a detent 43.
Different configurations of gearboxes are based on their mounting. The mounting of gearboxes to the driven equipment dictates the arrangement of shafts in the gearbox. In certain cases, space constraints also affect the shaft arrangement. This is the reason why the input shaft in a gearbox may be offset horizontally or vertically. However, the input shaft is hollow, so that it can be connected to lead through lines or clamping sets.
gearbox

Mounting of a gearbox

In the mathematical model of a gearbox, the mounting is defined as the relationship between the input and output shafts. This is also known as the Rotational Mount. It is one of the most popular types of models used for drivetrain simulation. This model is a simplified form of the rotational mount, which can be used in a reduced drivetrain model with physical parameters. The parameters that define the rotational mount are the TaiOut and TaiIn of the input and output shaft. The Rotational Mount is used to model torques between these two shafts.
The proper mounting of a gearbox is crucial for the performance of the machine. If the gearbox is not aligned properly, it may result in excessive stress and wear. It may also result in malfunctioning of the associated device. Improper mounting also increases the chances of the gearbox overheating or failing to transfer torque. It is essential to ensure that you check the mounting tolerance of a gearbox before installing it in a vehicle.

China OEM Offshore Crane BV Marine Crane BV Marine Lifting Crane   cycloidal gearbox	China OEM Offshore Crane BV Marine Crane BV Marine Lifting Crane   cycloidal gearbox
editor by CX 2023-11-09

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