Whether the trolley can be part assembled in advance or needs to be assembled on the beam will depend on the position of
and access to the beam or whether the end of the beam is open, prior to beam end stops being fitted.
Finally check the operation of the trolley hoist by rolling it along the beam with load and check the following:
• Sufficient lateral play between the flange of the trolley wheel and the outer edge of the beam flange must be
maintained whilst not exceeding the maximum gap as detailed in figure 2 below.
• The anchor point must be positioned centrally under the beam flange.
Failure to attach the trolley correctly could result in serious injury to persons or damage to equipment. Check the trolley is of
the correct profile and size, or correctly adjusted, for the beam width and that it seats correctly on the beam flange. There
should be no other contact between the beam and the trolley. Ensure the lifting appliance is compatible with the trolley and
that hooks or other attachments fit freely into the shackle of the trolley.
Check the runway track/beam is level, has an even running surface and is fitted with positive end stops which engage with the
trolley frame or wheel treads.
The trolley must be placed directly over the centre of gravity of the load. Under no circumstances must they be obliquely side
loaded as this will cause them to tip, resulting in damage to the track or the trolley becoming detached from the track and
falling.
For plain trolleys, push rather than pull suspended loads.
For geared trolleys the trolley is moved along the beam by turning the hand chain.
Always transport the load in the horizontal direction slowly, carefully and close to the ground, taking care to avoid swinging the
load.
Before removing it from a beam, make sure there is no load on the trolley.
Optional Locking Device
If the trolley is fitted with an optional beam locking device, the locking device hand wheel
turns a worm gear which drives the locking pin to the bottom of the beam flange to clamp
the trolley in place. Hand tighten the locking device hand wheel in a clockwise direction and
test the trolley for movement. Continue to hand tighten until the trolley remains stationery.
Over-tightening of the hand wheel will cause the worm gear to lock and will be difficult to
release.
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