Automatic Hydraulic Loading Dock Leveller, Dock Levellers, Industrial Doors, Australia



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automatic hydraulic loading dock leveller

Automatic hydraulic loading dock leveller

Automatic hydraulic loading dock leveller

Product Code : LDL20

Durable and extremely safe
2 rams to support loads (not one)
Quick operation
Easy to install
 

 

 

 

 

 

 

 

 

 

 

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Application

The Leda LDL20 Dock Leveller is the standard solution in general industry applications and easy to operate.
The Leda LDL20 Dock Leveller system meets the standard demandsof most loading operations and fully complies with rules and regulations of the European Standard EN 1398.

Mode of Operation

The swing lip safely bridges the gap between the ramp and the truckbed.
When the dock leveller is raised, the lip swings out and the leveller lowers gently onto the truck bed.
After loading or unloading, the leveller is raised again, the lip swings down and the platform returns to its parking position, i.e. to ramp level.


Dimensions

NL - Nominal length
OL - Overall length
GL - Gradient length
NW - Nominal width
LL - Lip length
LH - Leveller height
A - Working range above dock level
B - Working range below dock level


Nominal width (NW) 1750, 2000, 2200.

Features

Sizes - nominal length* 2000, 2500, 3000, 3500 (mm)
Sizes - nominal width 1750, 2000, 2200 (mm)
* Other sizes are available on request
Vertical working range
Above dock:0 - 520 mm
Below dock:0 - 350 mm
Platform tear plate
Standard:Thickness: 6 mm (6/8)
Option:Thickness: 8 mm (8/10)
Surface treatment:
Standard:
RAL 5010 (blue)
RAL 6005 (green)
Option:
RAL 3002 (red)
RAL 9005 (black)
Hot dip galvanised
Control Unit
Supervision 105, 105A, i105, i305
Fault & service indicator

Performance

Load capacity:
6 tonnes (60kN)
Max. point load:
1,3 N / mm2 (6 mm tear plate)
6,5 N / mm2 (8 mm tear plate)
Motor hydraulic unit:
0,75 kW
Mains supply:
400V 3-phase, 230V 3-phase
Control unit protection class:
IP 65
Allowable oil types:
Shell Tellus DO 10 (-20C - +60C)
AeroShell Fluid 41 (-30C - +60C)
Fuchs Plantolube Polar 15S (-20C - + 60C)
Magnetic valves:
24V/DC 18W S1
Surface treatment paint class1:
80 μm Corrosive Category C2 M acc. DIN EN ISO 12944-2
Surface treatment paint class3:
160 μm Corrosive Category C3 M acc. DIN EN ISO 12944-2
Surface treatment galvanised:
Hot dip galvanised 80 μm Corrosive category C4 & C5-I Macc. DIN EN ISO 12944-2


Parts Overview

1 - Leveller platform
2 - Swing lip
3 - Leveller frame
4 - Toe guards
5 - Warning stripes
6 - Hydraulic unit
7 - Lift cylinders
8 - Swing lip cylinder
9 - Buffers (option)
10 - Tail lift recess
11 - Control unit

Standard Parts

Frames -connection to building:
T-frame
Surface:
Painting RAL 5010 or RAL 6005
Hydraulic Equipment:
Low noise hydraulic unit
Two hydraulic lift cylinders
One hydraulic lip cylinder
Lip:
Lip length 400 mm
Bevelled 40 mm
Bent lip

Options

Frames -connection to building:
T-200 frame
W-frame [frame for welding]
F-frame [flat frame for welding]
P-frame [pit-frame, max NL=3000]
B-frame [box-frame]
Surface:
Painting RAL 3002 or RAL 9005
Hot galvanised
Hydraulic equipment:
Low temperature oil
Bio oil
Lip options:
Lip length 500mm [only LH>600]
Lip bevelled, 100 mm
Straight lip
2 fold down segments
Tapered lip
Energy & Ergonomics:
EPDM seal*
40 mm platform insulation
Slip protection / noise reduction
* Not available for frame P

Platform
Platform tear-plate thickness
The 6 mm (6/8) tear-plate is designed for loading and unloading with typical 4 wheel pneumatic-tired fork-lift trucks.
Alternatively an 8 mm (8/10) tear-plate is available for handling equipment with high point loads, such as electric pallet trucks.
However, potential platform deformations do not reduce the functionality of the leveller.
Toe guards
The leveller is as standard equipped with toe guards; steel plates between the platform and the frame.
The toe guard prevents the pinching of feet when the leveller is lowered.
EPDM seal
To seal the gap between leveller and pit, an EPDM seal can be factory-installed between the flexible platform and frame.
By reducing draughts into the building, working conditions improve and energy savings increase.
Slip protection / noise reduction
Applying a polyurethane slip protection coating on the lip and platform ensures a durable non-slip and noise reduction surface.
The effect is a smooth and comfortable surface for handling equipment that is less receptive to wear and tear.
The PU coating material is resistant to impact, to thermal impact and most types of chemicals and it has a high loading capacity.
Platform insulation
When the dock leveller is positioned in a bay directly outside the door opening, it can be beneficial to insulate the dock leveller.
The insulation counteracts the penetration of incoming heat/cold from outside.
To achieve the best results, the dock leveller should also be fitted with an EPDM seal.
The insulation consists of factory-installed insulated panels with a thickness of 40 mm.

Control Unit



Functions



Safety
Emergency Stop Function.
Safety valves block lowering movement after max. 6% of the nominal length of the leveller.
Two lift cylinders make sure the leveller stops in a horizontal position.
Free floating position.
Platform torsion. Lateral deflection of at least 3% of nominal width.
Toe guards cover gap between platform and pit in leveller's highest position.
Working range gradient max. 12,5% (~7deg).
Warning stripes on side plates and on frame (black/yellow).

Load Capacity
The load capacity of a dock leveller must always be higher than the rated load.

Example
Weight of forklift truck: 3600 kg
Weight of goods: 1500 kg
Weight of driver: 100 kg
Total weight/rated load: 5200 kg
Suitable load capacity of the leveller: 6000 kg/60kN

Plate Thickness

The 6 tonnes (60kN)LDL20 Dock Levelleris as a standard equipped with a tear plate of 6 mm (6/8).
Optionally an 8 mm (8/10) tearplate is available.
Each handling-equipment traffic situation creates a certain point load impact on the dock leveller platform depending on the contact area of the wheels.
The typical 4 wheel pneumatic-tired forklift trucks have a lower point load impact than electric pallet trucks with small hard wheels.

Example


Leveller Length

When determining the leveller length, measure the maximum height difference between the truck bed and the dock level.
Next, determine which vehicles will be used and lookup the maximum gradient the vehicles are allowed to be used on.

Vehicle Max gradient
Roll cage: 3%
Hand pallet truck: 3%
Electric pallet truck: 7%
Forklift truck: (battery) 10%
Forklift truck: (gas / petrol) 15%

Calculation
Minimal leveller length = height difference / gradient (%)

Nominal Width

The LDL20 Dock Leveller is available with a nominal widthof 1750 mm, 2000 mm or 2200 mm.
The correct nominal width must exceed the widest loading vehicle by at least 700mm.
  File Title
automatic hydraulic loading dock leveller LDL20 Product Datasheet (3.76 MB)
 

Leda Security, Sydney, Melbourne, Brisbane, Adelaide, Perth, Australia

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18th May 2012