Winches offer greater pulling power

Profi Puller winches from the J D Neuhaus range now offer pulling power of up to 3500kg (previous limit was 3000kg). Their air operated winches fitted with 6kW rated motors not only have higher pulling power, but also higher rope speeds for faster rope pay-out and recovery times.

These products are also Ex rated, suitable for safe operation within hazardous areas. They are particularly suited to oil and gas production plants, both offshore and land based, as well as chemical installations and a wide range of other industrial operations where potentially explosive atmospheres may occur.

Picture shows the latest Profi Puller 3000-6 high performance winch from J D Neuhaus Ltd, with a pulling capacity of 3500kg and shown fitted with wire rope and drum guard.

A durable steel structure is combined with a long drum to provide good rope capacity with four layer spooling, and a drum/rope diameter ratio which ensures optimum rope life operation. An integrated planetary gearbox also utilises exhaust air cooling for 100% duty cycles with minimum maintenance and maximum reliability. The winches are easy to install and have a low operating noise level. A winch mounted control lever is provided as standard for precise operation and variable speed control. Optional twin button or lever pendant controllers can also be supplied for remote operation.

Emergency stop and overload protection are incorporated as standard, with other optional features including pressure roller, rope drum grooving, slack rope detector, welded pulling frame and drum guard (fitted as standard to CE winch version). A split drum arrangement can also be provided which facilitates pulling/spooling-off operations to take place on adjacent sides of the drum at the same time.

Within the full range of JDN lifter/puller winches, the large capacity puller winches are supplemented by lightweight aluminium framed Profi lifters with capacities of 500 or 800kg. Rugged, steel framed products can also be supplied for either lifting or pulling operations with capacities from 1200 to 2000kg and motor ratings from 2.2 to 5.5kW. All products of 1200kg capacity or more can also be supplied with offshore painting (yellow) as an option. Some products can also be equipped with an emergency lowering feature, suitable for operation in accident/emergency evacuation situations.

All products are designed to operate at 6 bar air pressure and can be used with varying rope diameters 8-12mm or 5/16"-1/2" in size.

The Ex ratings for the standard products are Ex II 2 GD IIB T4(X) / II 3 GD IIB T4 (X). This rating can be increased where increased spark protection has been specified to Ex II 2 GD IIB T4 (X). For further information, e-mail: info@jdneuhaus.co.uk or view website: www.jdneuhaus.co.uk     

Air operated monorail hoists from
J D Neuhaus feature upgraded air motors

Some air operated monorail hoists from J D Neuhaus feature upgraded air motors and all models can be customised with additional accessories to suit specific industry challenges. Operating off a pneumatic air pressure of 85psi (6 bar), the hoists avoid the potential hazards and dangers associated with electrically powered equipment when operating within areas with high humidity or potentially explosive dusts or gases. With carrying capacities ranging from 10 to 115 tonnes, these hoists are suitable for a wide range of both general and specialised engineering applications including outdoor installations.

Where confined or restricted headroom conditions are involved then ultra-low monorail hoists are also available for loads from 4 - 100 tonnes. A high performance patented vane motor (as now fitted to these hoists up to 12 tonnes capacity) combines self-lube operation with sturdy design features and a reduced number of component parts. This simplifies setting and assembly procedures while providing long, trouble-free performance with low maintenance requirements.

Picture shows J D Neuhaus EH50 monorail hoist (50 tonnes lifting capacity), with pendant mounted electronic hook load indicator shown in inset view.

All these hoist products can also be supplied suitable for use on curved beam supports, making them particularly suitable for transfers between production lines. Optional electronic indicators of the hook loading, in addition, can be provided as an attachment to the pendant controllers. A further recent introduction includes perforated chain storage boxes that prevent the retention of water or other environmental site debris. This option is particularly suited to land rig operations.

JDN air hoists are also classified for explosion protection when operating within hazardous area conditions as can be encountered within chemical, mining, tunnelling, foundries and offshore industries etc. Standard hoists are marked Ex II 2 GD 11A T4/Ex II 3 GD 11B T4, with increased spark protection provided as an option up to explosion level 11C.

As well as being insensitive to humidity, dust and temperatures from -20°C up to +70°C, these compact hoists incorporate instant starting with a fail-safe disc brake for safe load-holding in the event of interruption to the air power supply. Anti-climb and anti-drop devices are also included, with pendant controllers and emergency shut-off valves. Overload protection, rack and pinion drive, two-speed trolley travel control and a filter silencer can also be provided as optional accessories.

For further information, e-mail: info@jdneuhaus.co.uk or view website: www.jdneuhaus.co.uk   

Offshore winch pulls both ways

A J D Neuhaus air operated winch has been successfully deployed on the AWG/1 drilling rig operated by Nederlandse Aardolie Maatschappij BV (NAM) in the Dutch North Sea sector.

The winch is a Profi Puller 1800 model, fitted with a split winding drum and is used for hauling loads on a flatbed wheeled trolley running in a guidance track over a connecting bridge between the production and compression platforms. The trolley has a load capacity of 7 tonnes, with the single winch pulling loads in both directions across the 40 metre long bridge. With the winch situated at one end of the bridge and a reversing roller at the opposite end, a positive pull force can be exerted on a loaded trolley when traversing in either direction over the connecting bridge.

The Profi Puller 1800 winch, fitted with a split winding drum, pulls both ways.

The split winding drum on the winch has one drum paying-out the wire rope at the top (which is connected to the side of the trolley) while the other drum reels-in at the bottom (with the rope connected to the opposite side of the trolley after passing over the reversing roller). This sequence of paying-out and reeling-in is changed when the direction of the rotation of the winch is reversed. Loads traversing the exposed bridge causeway are always tethered at each end for maximum safety, with the attached wire rope always in tension from the direction of the pulling operation.

JDN winches designated for offshore duties are also subject to paint finishes designed to provide a high level of protection against adverse weather conditions and general exposure to marine environments.

With air operated motors providing the power, the JDN equipment is suitable for operation in hazardous areas and as standard carry a rating of Ex II 2 GD T4(x) / II 3 GD 11B T4(x). Increased spark protection can also be provided for a rating of EX II 2 GD 11B T4(x).

JDN winches can be supplied for lifting and pulling operations with capacities from 1200 to 3000kg. They combine variable speed operation with maximum reliability and minimum maintenance, even at 100% duty cycles. They offer high rope wire capacities, with an ideal ratio of drum/rope diameters which ensures long rope duty cycles. Highly durable steel structures, with optional pulling frames for rigidity and durability are further enhanced by ease of installation and low operating noise levels.

BOP handling systems, suitable for landbased or
offshore oil and gas exploration and production platforms

BOP handling systems, suitable for landbased or offshore oil and gas exploration and production platforms can be supplied by J D Neuhaus. These products can be offered with pneumatic or hydraulic operation for the lift, lower and traverse operations, making them ideally suited for installation in hazardous or other potentially explosive environments.

A BOP handling system comprises twin matched hoists used in conjunction on parallel overhead rails. Systems can be provided with joint lift capacities from 20 to 200 tonnes. Where limited headroom conditions occur, then ultra-low monorail hoists offering combined lift capacities from 8 to 24 tonnes can also be supplied. (Refer to picture on the right).

These products comply with international standards including AP1 7K, ABS, ANSI B30.16, DNV Approval Programmes and NORSOK, together with 3.1B certification on load carrying parts, and backed-up by a worldwide service network. The hoists incorporate overload protection adjustable from 90 to 125%, with a load safety factor of 5:1, dynamic factor of 1.33 and tensile strength rating of 2.5. In addition, traceability is provided by the JDN unique parts marking system.

J D Neuhaus also provide instructions for the safe installation and operation of their BOP handling systems. This document includes information regarding the selection and reinforcement where necessary of the overhead runway beams, together with the positioning, spacing and alignment of hoists for optimum operation. The need to use lift points located on the BOP which are above its' centre of gravity, and the need to keep trolley drives and beam flanges clear of drilling mud are indicated. The need for preventive maintenance and adequate lubrication to combat the effects of seawater and excessive component wear is also highlighted.

Further information, e-mail: info@jdneuhaus.co.uk or view website: www.jdneuhaus.co.uk     

Hydraulic hoist operates at cryogenic temperatures

The lifting specialists J D Neuhaus have carried out successful tests at a cryogenic test chamber in the Netherlands for operation of one of their hydraulic monorail hoists at -45°C temperature. Although initially specified for on and offshore operations, the hoists could be used in other polar operations such as scientific land stations, together with commercial fishing, expedition and processing vessels.

The JDN standard range of air or hydraulically operated hoists are ATEX rated and insensitive to both humidity and dust while operating within a temperature range of -20°C to +70°C. However, following inquiries regarding a specialised oil and gas lifting application taking place under extreme arctic conditions, an adapted EH-20 monorail hoist was put on extended testing at minus 45°C. To ensure smooth starting at such an extreme temperature, the hoist was fitted with a pre-heating device to raise the temperature of the drives to -25°C before operation. The hoist was also equipped with cryogenic hydraulic oil to ensure efficient operation within a temperature range of -45°C to +40°C.
The standard EH range of hydraulic monorail hoists available from JDN can be supplied for lift capacities from 20 to 100 tonnes. Controlled load lowering is also available in the event of oil supply failure. They are ideal for applications involving explosive atmospheres, and are fitted with sensitive, infinitely variable speed control of lifting/lowering and travel operations. They feature fully enclosed and highly robust gear motors, with extremely low noise emissions and integrated overload protection.

For further information, e-mail: info@jdneuhaus.co.uk  or view website: www.jdneuhaus.co.uk  Refer to next page