Product category:
Robotics, Handling and Storage
News Release from: JD Neuhaus | Subject: Slewing jib cranes
Edited by the Engineeringtalk Editorial
Team on 31 May 2001
Cranes designed for hazardous
environments
Cranes designed for safe operation in the chemical industry, or wherever the lifting or transportation of loads in hazardous atmospheres are envisaged, can be supplied by J D Neuhaus Ltd.
Cranes designed for safe operation in the chemical industry, or wherever the lifting or transportation of loads in hazardous atmospheres are envisaged, can be supplied by J D Neuhaus Slewing jib cranes for work handling on a few metres radius can be supplied, together with overhead travelling cranes
This article was originally published on Engineeringtalk on 3 May 2007 at 8.00am (UK)
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Hoists are safe for hazardous areas
Hydraulically operated air hoists are designed for safe operation within hazardous areas.
These can be supplied to cover up to 30 metre spans, suitable for loads up to 10 tonnes accommodated with single girder designs, and up to 50 tonnes possible on double girder cranes.
Where required, suspension cranes can also be supplied.
As for standard overhead cranes these can be fitted with double hoists and are suitable for loads up to 10 tonnes and spans of 12 metres.
Further reading
Air operated winches get in the groove
Optional rope guide drum grooving is now available for the air operated winches supplied by JD Neuhaus.
Manual chain hoist lifts up to 250kg
Ultracompact, lightweight manual chain hoist fully complies with current handling and safe working practice legislation, and is equipped with an overload limiter as standard.
The pneumatic drives utilised by these cranes are fed with compressed air which is processed in a non-hazardous area remote from the operating site.
This ensures that hoists, trolleys and complete crane installations in standard form can be used in hazardous areas (Zones 1 and 2 as well as Zones 21 and 22), corresponding to classification EXGD 11B T4.
In conditions of increased explosion hazard (Zone 1), then 'spark proof' variations can also be supplied corresponding to EX2GD 11C T6.
Any components at risk of friction and contact are manufactured from suitably inert materials which include the prevention of dangerous sparking from electrostatic discharge.
The design is such that even in the event of operating defects, temperatures would remain below 85øC, cold enough for class T6 deployment.
As distinct from electric motor operation no additional protective measures are required for hazardous area operation.
High duty cycling also poses no problems as overheating is eliminated by the automatic cooling effect of expanding compressed air from the air motors.
The pneumatic drives can also be safely used in hazardous and wet areas, at temperatures from -20ø to +70øC in conditions of high humidity, steam or fumes as well as dusty and corrosive atmospheres.
Optional drive controls can be supplied including single or two speed together with infinitely variable speeds for sensitive or precise load handling.
For remote handling, explosion proof remote radio controls are available to complement the in-built pneumatic system controls.
All cranes are fitted with pendant controls for three axis movement, together with a wide range of safety devices for overtravel, emergency shut-off, overloading, collision control etc.
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