Introduction
Alatas, working with SCM can offer offshore crane sales worldwide. Alatas is also SCM's Service Partner and offer SCM crane service and repair worldwide for SCM Marine Cranes and SCM Offshore Cranes
Rope luffing lattice boom cranes
SCM supplies tough and reliable offshore cranes, meeting all international standards and certification requirements.
Customized designs are available to various sea states and meeting different offshore requirements.
SCM has manufactured and delivered more than 100 offshore cranes with max. boom length of up to 62m, hoisting capacity up to 50t and fastest whip line hook speeds.
SCM cranes distinguish themselves trough robust, simple and durable construction. The drive controls are fully hydraulic. High quality, German made components eliminate the need for sophisticated control electronics, while maintaining precise, safe and positive control of all motions at all times. This greatly reduces breakdowns, simplifies troubleshooting and provides for easy and low cost maintenance.
SCM has been granted two national patents for this kind of offshore crane technology. |
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Crane motions are performed by main hoist unit, whip hoist unit, slewing unit and luffing unit. Hoisting / luffing winches consist of drum, reduction unit with high- strength internal planetary gears, disc brake and axial piston motor with excellent performance.
Dynamic braking is performed hydraulically whilest the spring loaded multiple disc brakes serve as the holding brakes. Both brakes will engage immediately in the event of loss of power thus ensuring safety
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The ratio of drum diameter to rope diameter is not less than 18:1, which prolongs wire rope life.
The crane is equipped with a luffing locking device. Locking is performed through a ratchet and pawl system mounted on the luffing winch. The device can be controlled in the operator's cabin.
The slewing unit is driven by axial piston motors having excellent performance. The rotation of slewing platform and boom is performed through the direct mesh between the output pinion of high-strength planetary reduction gearbox and the inner or outer gear ring of slew ring bearing. |
Hydraulic system
The hydraulic system consists of two or three sets of hydraulic pumps driven by diesel engine(s) or electric motor(s), various valves and pipes. The hydraulic oil from the pumps is transferred to the hoisting winch, slewing motor and luffing winch by a load sensing control block which allows highly precise crane movements. The main control block is controlled by a hydraulic a servo system, .all motions can be controlled step-less from zero to maximum speed. Winch- and slewing motors are equipped with load balancing valves to ensure all motions are safe and smooth.
Return filters are provided for the hydraulic system to remove impurities in the hydraulic oil.
An forced air draught oil cooler in conjunction with two thermostats ensures that the oil temperature stays in the optimal range.
Operators cabin
The cabin is of closed construction, ergonomically designed amnd comfortably equipped to reduce operator fatigue.
All operations are controlled from inside the cabin. The location of the cabin gives excellent visibility of the entire working area. It can be positioned either at the left or right side of the crane.
The main control devices are "spring centered" control joysticks. One is used to controlling hoisting motion, the other is used for controlling the slewing and luffing motions. |
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A console monitoring all additional instrumentation can be located on the operator’s left or right hand side.
Safety system
Hoisting, luffing and slewing units are equipped with a auto-protection device. This device is independent from the control oil line of the main power system. All motions stop automatically to ensure crane safety in the event of a power failure or pressure loss.
Scope of supply
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Every crane is thoroughly load- and function tested on our in-house, inclined test stand prior delivery |
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Crane base prepared for welding to deck. Base height (normally not more than 2m) can be in accordance with user's requirement. |
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Crane surface has been sandblasted, the primer and top coat can be in accordance with manufacturers standard (or user's requirements). |
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Spare parts as per manufacturers standards are delivered together with crane. |
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Certificate of Classification Society, Works certificate of quality, test report and certificates of hook, shackle, wire rope etc. required by the user will be supplied together with crane. |
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Technical documents concerning installation, operation and maintenance are provided. |
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Guidance and technical support for installation and commissioning onboard ship will be supplied. |
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Options
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Technical data
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Offshore crane technical data for rope luffing crane
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SCM cranes
South China Marine Machinery Plant (SCM), directly affiliated to China State Shipbuilding Corporation (CSSC), is the National First Class Enterprise. In 1996 SCM passed the authentication of GB/T9001-1994 (idt ISO9001-1994).
SCM was found in 1968 by the state investment. Since 1970s SCM has been engaging in the design and manufacture of marine deck machinery, and is one of the major manufacturing enterprises in the field of marine deck machinery and is a major manufacturer in designing and manufacturing offshore engineering equipment in China. Main products include various hydraulic cranes, offshore engineering equipment, hydraulic windlasses/winch,oil tank washing machines etc.Up to now, SCM has manufactured big marine crane with lifting capacity up to 150t,heavy duty windlass/winch with anchor chain diameter up to 114mm and winch with pull up to 300t.
Over the past three decades, SCM has constantly designed and developed new products such as the electric-hydraulic marine cranes, life raft/rescue boat davit, electric-hydraulic windlass/winch, hydraulic - steering gear, oil tank washing machine and marine gearbox etc. for various vessels and the offshore cranes and other offshore engineering equipment with high performance for the offshore engineering such as offshore platforms.The products can be provided with the certificates issued by Classification Societies according to customers' requirement. With reliable quality, reasonable price and good after-sales services, SCM’s products have been well received by customers at home and abroad.
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SCM is rich in technology resources and has a special product development institution with 14 senior engineers. The latest technology such as CAD system is adopted to design and develop the products; and the advanced finite element system is adopted to analyze the forces and structures of the products, thus ensuring the design quality of products. By applying the Product Data Management (PDM) system and ERP system, efficient management on the product technical data and material sources is achieved.
SCM has advanced manufacturing and mounting equipment and strong ability in comprehensive machining. In recent years, SCM has constantly renewed and altered the machining equipment, introducing various advanced machining centre, turning centre and digital-controlled machining equipment applicable to various types of work in production, thus strongly ensuring SCM's productive and machining quality.SCM has modern equipment for mounting and testing the products. By using the simulate test stand with max.test moment up to 22,000tm for testing cranes, winch test stand with 200t and steering gear test stand with more than 800KNM, the mounting and testing of the products before delivery are ensured. |
In recent years,SCM has developed series new products with its own intellectual property right and some of them are awarded with the national patent, and the products have the same advanced level as the similar product in the world.
SCM has a professional quality assurance department, which sets up a complete quality assurance system. There are a group of high quality control personnel who carry out Quality System of ISO 9001 in all aspects. Each product must be strictly tested and inspected before delivery to ensure its reliable quality.
SCM locates in Wuzhou, Guangxi, China, adjacent to Guangdong Province and is an important export harbour of Guangxi. |
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Offshore crane reference list
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Offshore crane technical data for rope luffing crane 609kb
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Alatas Offshore crane enquiry form click here
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