STAHL CraneSystems GmbH : Chain hoists in series

STD Vario dual chain hoist

The R&D department of STAHL CraneSystems has systematically developed the successful STD dual chain hoist further. The result of many years of experience and intelligent technology is the STD Vario dual chain hoist with electrically adjustable spacing between the hooks, a further gain in safety at work and flexibility. An innovation on the market.

Advantages

Innovative _ electrically adjustable spacing between hooks
Cost-effective _ no additional spreader beam required, the available space can be utilised to the full
Maximum safety _ absolutely synchronous operation when transporting loads of different lengths, the load hooks cannot be displaced accidentally during hoisting or travel

Use of two individual
chain hoists

completely synchronous operation not possible
trolley spacing necessary
complex power supply
the spacing between the hooks can change when the trolleys travel and cause a dangerous load condition

Use of a dual chain hoist with lifting beam

lifting beam requires additional headroom
either the hooks on the beam must be moved “manually” or
if they are moved automati cally, an additional power supply to the beam is necessary
the load distribution could become lop-sided