Dock Levellers Specification
Dock levellers are used to form a safe, obstruction-free and user-friendly bridge between the floor of a building and the loading floor of a truck. A leveller makes it possible to drive continuously in and out of the truck for the purpose of loading or unloading
Specification/construction
The leveller is built up of the following components:
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a box casing with chassis beams |
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a deck with an integrated extending lip |
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a hydraulic system for manouvering deck and lip consisting of a drive unit, two deck cylinders and a lip cylinder |
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a control box with push button control |
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Material
The box is made of 4 mm thick steel plate. The tread plate is made of steel plate with a tear-drop anti-slip surface and is reinforced on the underside by steel beams.
Finish
All structural parts are sprayed in RAL 5013 (cobalt blue) or RAL 9005 (black) as standard.
Drive unit
The deck is operated by two hydraulic cylinders and the extending lip by one. The low pressure hydraulic drive is mounted under the deck.
Controls
The control box houses a PCB and is fitted with control buttons on the front panel. The control box is mounted as standard at a height of 1500 mm beside the door opening.
Operation
Located on the panel of the control box are:
push button "raise deck"
push button "lower deck"
push button "extend lip"
push button "retract lip"
a main switch/emergency stop
Safety
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power failure safety (the deck remains stationary when power supply is restored) |
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automatic emergency stop |
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hose rupture safety |
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through distortion of the deck (torsion) the lip will make contact over the width of the loading floor of trucks even when they are not level |
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toeguards |
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yellow/black safety markings |
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maintenance safety strut |
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emergency stop switch on the control panel |
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Mounting structure requirements and connection
These depend on the installation method that has been chosen:
embedding of the box casing directly in concrete (with or without letterbox)
installation in a pre-formed concrete pit
as above, but with the work floor poured at a later stage
installation in prefabricated concrete elements (these can be supplied by Novoferm)
power supply must be present within 500 mm of the control box
Working drawings are available for the various installation methods
Technical specifications
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| Model |
Width |
Length |
Extension |
Range* |
| 25/20 |
2000 |
2550 |
750 |
+ 325 |
- 370 |
| 30/20 |
2000 |
3050 |
750 |
+ 380 |
- 370 |
| 35/20 |
2000 |
3550 |
750 |
+ 450 |
- 420 |
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* ( maximum gradient 12,5%)
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| capacity, dynamic |
100 kN |
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| capacity, static |
150 kN |
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| mains voltage |
3N~400V/50Hz/10A |
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| degree of protection |
IP 54 |
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| overall height |
800 mm |
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Accessories/options
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width 2250 mm |
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capacity of 75 kN dynamic (~120 kN static) |
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telescopic flaps on the outside edge of the extending lip to accomodate relatively narrow trucks |
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finish in a customer specified RAL colour |
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interlock: the leveller is interfaced with the loading bay (sectional) door to avoid operation when the door is closed |
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electric components to IP65 |
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heavy duty rubber bumpers |
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"box" model for concrete embedding |
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threaded bushes for concrete embedding for fixture of the rubber bumpers |
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hot galvanised mounting plates for the rubber bumpers |
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draught seal between deck and chassis (brush seal or rubber lip seal) |
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semi-automatic return to neutral position |
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