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Special Overhead Hold Crane, SWL 10t (Technical supply specification)


1. General Information (Operating Conditions)

• Climatic execution: OM5 according to GOST 15150-69.

• The crane remains fully operational under continuous exposure to 98% relative humidity at an ambient temperature of +35 °C.

• The crane operates reliably under the following conditions:
– Continuous heel up to 5° to any side;
-Continuous trim up to 2° by bow or stern.

• The crane remains serviceable after terminating long-term exposure to the following non-operating (stowed for sea) conditions:

– Vessel heel up to 15° to any side;

– Vessel trim up to 5° by bow or stern;

– Rolling with an amplitude up to 40°;

– Pitching with an amplitude up to 10°.

-The crane operates at heel and trim angles up to 5°.


2. Purpose

The special overhead crane is designed for handling 20-foot containers, and is equipped with an auxiliary hoist for handling general cargo.

Special Overhead Hold Crane, SWL 10 t, General Arrangement Drawing, Front View
Special Overhead Hold Crane, SWL 10 t, General Arrangement Drawing, Front View

About

What is a Special Overhead Hold Crane?

The special overhead cargo hold crane is utilized for cargo operations within the confined spaces of vessel cargo holds. This solution enables efficient handling of containers and general cargo without requiring auxiliary port equipment, optimizing the vessel’s internal logistics. The overhead configuration ensures convenient coverage across the entire width of the working area.

Functionality of the Marine Overhead Crane

The overhead crane is designed for smooth and precise handling of various cargo types. The design enables seamless movements, simultaneous operations, and adaptation to diverse tasks inside the hold. This makes the equipment a versatile tool for vessels handling a wide range of cargo types.

Features of the Special Cargo Hold Design

The cargo hold design of the crane accounts for the specific constraints of shipboard space and the requirements for equipment installation inside the vessel’s hull. The overhead configuration ensures rational utilization of the hold’s usable volume without obstructing other operations, maintaining unobstructed access to loading and unloading zones.

Application of the Overhead Crane in Cargo Operations

The cargo hold overhead crane is utilized for both container handling and general cargo operations. This combination of functions makes it an efficient solution for multi-purpose vessels, where cargo handling flexibility and reduced turnaround times are critical.

Equipment Manufacturing and Design Approach

Izhora Hydrosystems LLC designs and manufactures overhead cranes in compliance with industry requirements and practical marine equipment operational experience. The company’s expertise ensures the development of solutions that seamlessly integrate into the vessel’s structure while accounting for future maintenance and operational constraints.


3. Scope of Supply

3.1  Special Overhead Hold Crane, SWL 10 t

3.1.1 Product Composition

ComponentQuantity
Overhead crane complete with equipment1 set
Crane runways with end stops and installation kit for shipboard mounting1 set
Tools and accessories for hydraulic system filling and draining1 set
Control panel for integration into the ECC (Engine Control Room) console1 pc.
Portable overhead crane control unit1 pc.
Electrical equipment (cabinets, panels, connectors, power cable)1 set
Cable trolleys for overhead crane1 set
Electrical safety markings (“danger high voltage”, “grounded”)1 set
Special Overhead Hold Crane, SWL 10 t, General Arrangement Drawing, Side View
Special Overhead Hold Crane, SWL 10 t, General Arrangement Drawing, Side View

3.1.2 Main Parameters

ParameterValue
SWL in calm water (h3% ≤ 0.25 m): main hoist (spreader)10 t
SWL in calm water (h3% ≤ 0.25 m): auxiliary hoistapprox. 5 t
Bridge span (crane track gauge)10.8 m
Spreader vertical travelapprox. 800 mm
Crane installation height (from deck to rail top)approx. 3.9 m
Length of crane runwaysapprox. 16.8 m
Crane duty cyclemedium duty, 25% cyclic duration factor (CDF)
Total weight of crane complete with equipment, rails, and end stops, max.16 t
Crane overall length (girder), max.11.05 m
Overall height above rail, max.650 mm
Overall height below rail (without spreader and hoist), max.400 mm
Electrical power supply3-phase, 400 V, 50 Hz, isolated neutral

3.1.3 Spare Parts, Tools, and Accessories (ZIP)

Manufacturer’s standard spare parts, tools, and accessories kit for 1-year operation.

3.1.4  Documentation

DocumentNote
Technical Passport1 pc.
Slinging diagram1 pc.
Installation and operation manual1 pc.
Shipboard testing procedure1 pc.

3.1.5 Certificates

RMRS Certificate (RS Certificate) according to Form 6.5.30.


4. Additional Requirements

• Degree of protection for electrical equipment installed on open deck: IP56, indoors: min. IP22 according to GOST 14254-2015.

• The crane control system provides stepless speed control for all crane motions from zero to maximum, as well as simultaneous motions (with reduced maximum speeds).

• Control devices are provided with Russian inscriptions and/or symbols defining their function.

• The control system includes an interlock to prevent simultaneous operation from the ECR console and the portable control unit.

• Control units are equipped with emergency “STOP” buttons and indicator lights for “Operation” and “Group Fault”.

• The crane is supplied with an adapter (crane foundation).

• Fasteners and installation tools are included in the scope of supply.

• The crane is provided with a manual emergency drive.

• The crane design ensures safe operation and maintenance.

• Failure of any component, or deviations in voltage, pressure, etc., do not result in an emergency situation.

• The crane is equipped with safety limiters for the following conditions:

 a) Overload exceeding 10% in calm water and min. 25% in sea conditions;

 b) Slack rope conditions;

 c) Approach to extreme limit positions.

• Adjustable safety devices are sealed.

• The electrical drive is provided with zero-voltage, overload, short-circuit, and false-start protection.

• Pump power circuits are equipped with inrush current limiting devices.

• The crane is equipped with a floodlight for the working area.

• Switchboxes with knife switches are provided for disconnecting the pump unit power supply.

• Machinery room lighting is powered independently (230 V, 50 Hz).

• The machinery room is equipped with 230 V power sockets.

• All electrical equipment is grounded.

• The design prevents accidental contact with live parts.

• Equipment enclosures are marked with an electrical hazard symbol.

• Marking complies with GOST IEC 61293-2016.

• The hoisting and slewing mechanisms are equipped with fail-safe (normally-closed) brakes; hydraulic cylinders are equipped with pilot-operated check valves.

• Wire rope sheaves are fitted with retainers to prevent rope derailment.

• Hooks are of the enclosed type and equipped with safety latches.

• Hook blocks and wire ropes are made of corrosion-resistant materials.

• Non-combustible or fire-retardant materials are utilized.

• The crane is coated in accordance with RS Rules. Coating system thickness is 250–300 µm.

• Coating system service life is min. 5 years.

• Information plates and inscriptions are in Russian.

• The equipment is manufactured under established serial production.

• Where equipped with measuring instruments:

 - instruments from the State Register are utilized;

 - metrological compliance with RS Rules is ensured;

 - instruments are calibrated, sealed, and provided with technical passports.


5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the date of shipment, unless otherwise provided by the contract.

Contacts

Phone: +7 (812) 339-61-68

Email: contact@i-hydro.tech