What matters at the dock
- Door springs, operators and levellers specified for the very high number of cycles a hub creates.
- High-speed doors on busy internal openings, with breakaway bottom bars that can be reset after a knock.
- Restraints, traffic lights and interlocks that keep constant shunter movements and trailer swaps under control.
- Dock lights and conveyor-friendly levellers for loading loose parcels deep inside trailers and swap bodies.
- Servicing planned around sort windows and door cycles, with bays taken out of use one at a time.
Why does dock equipment wear faster at a parcel hub?
Dock equipment wears faster at a parcel hub because doors, levellers and shelters complete far more cycles each day than at a typical warehouse, often across overnight and daytime sorts. Every trailer swap means a door opening and closing, a leveller raising and lowering, and a shelter being pushed back.
Other features of hub work add to the strain:
- Shunter tractors move trailers on and off bays quickly, sometimes meeting the bumpers hard.
- Extendable conveyors run over the leveller into the trailer for loose-loaded parcels.
- Swap bodies and trailers of different heights share the same bays.
- Doors may stay open for long periods while a trailer is loaded, exposing the dock to weather.
Damage tends to concentrate on a few points: bumpers, shelter frames, door bottom sections and leveller lips. Those are the parts we look at first when surveying a hub, and the ones most worth protecting or upgrading. Specifying for these conditions from the start usually costs less than repeated repairs and lost bays later.
Which doors cope with constant opening and closing?
For constant opening and closing we recommend sectional doors with springs specified for a high cycle count and an operator rated for the duty, plus high-speed doors on busy internal openings and links between sort areas. Standard springs fitted to a hub door reach the end of their life much sooner.
High-speed fabric doors open and close quickly, which limits draughts and heat loss between movements. A breakaway bottom bar lets the curtain come out of its guides if a forklift or cage clips it, so the door can be reset rather than rebuilt.
Standard roller shutters are slower and usually better suited to openings used less often. We match each opening to its real number of cycles per shift, and we check the operator and controls can handle the duty before quoting.
Controls matter too. Push-button or automatic controls with photocells and safety edges let staff open doors without operating them by hand, while interlocks stop a door opening onto an empty bay.
How do you keep trailer swaps safe and quick?
The safest way to keep trailer swaps quick is to make the status of each bay obvious to drivers and dock staff, using traffic lights linked to vehicle restraints and door interlocks. HSE guidance expects safeguards against vehicles leaving the dock too early, and the number of movements at a hub makes them essential.
- Vehicle restraints hold the trailer's wheel until loading finishes.
- Interlocks stop the door opening until the trailer is secured.
- Dock lights help staff see deep inside trailers during loose loading.
- Wheel guides line trailers up quickly so shelters and seals are not damaged.
Swap bodies standing on their legs have no wheels for a wheel-based restraint to hold, so the checks shift to the legs being down, locked and on firm ground. Shunter drivers may move several trailers an hour, so the sequence of lights and restraints should be simple and identical on every bay. Our guide to preventing drive-away and trailer creep covers the options.
How should servicing be planned at a hub that rarely stops?
Servicing at a busy hub works best when it is planned around door cycles and sort windows, with bays taken out of use one at a time during the quietest shifts. That keeps most of the dock available while equipment is checked.
Practical steps include:
- Setting service intervals by usage rather than by the calendar alone.
- Agreeing out-of-hours working and its price in advance.
- Identifying common wear parts, such as springs, cables and shelter curtains, so they can be ordered quickly.
- Reviewing repair records to spot bays that fail repeatedly and may need upgrading.
- Checking bumpers and shelter frames at every visit, because they take the most impact.
Where a bay has to come out of use, tell us the sort windows when it can be released and the work is planned around them.
See loading bay servicing for how planned visits are priced per item.
Equipment we recommend
Questions
Do parcel hub doors need high-cycle springs?
Yes, in most cases. Sectional door springs are designed for a set number of opening cycles, and a hub door can reach that number far sooner than a typical warehouse door. Specifying springs for a high cycle count when the door is ordered, or when springs are next replaced, reduces breakages and unplanned downtime. We confirm each door's daily cycles at survey.
Can extendable conveyors work over a dock leveller?
Yes, extendable conveyors are often run over a dock leveller into the trailer, but the leveller, shelter and door need to suit them. The leveller should sit level and stable while the conveyor is in use, the shelter should not foul the conveyor, and dock lights help staff see inside the trailer. We check the conveyor's position and travel at survey.
How do you secure swap bodies at the dock?
A swap body standing on its legs has no wheels for a wheel-based restraint to hold, so the safety checks focus on the legs being correctly lowered, locked and standing on firm, level ground. Traffic lights and clear procedures still control when staff may enter. Where a swap body stays on its chassis, wheel-based restraints can be used as normal.