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Glossary
A
Acceptance
In accordance with Section 7 of the Use of Work Equipment Regulations, the acceptance must be carried out in Austria by a sworn civil engineer.
Access ramp
See ramp.
Aggregate set-up
Indicates whether the hydraulic unit is installed underneath the platform (internal) or whether it is arranged separately, near to the lifting table (external).
Aggregates
There are internal and external aggregates. External aggregates enable the lifting table to be more even. The aggregate consists of the motor, the hydraulic pumps, the tank and the valve block.
Ambient temperature
In hydraulic systems, the ambient temperature is important to the design of the lifting table. Extreme ambient temperature values must be detected. Too high or too low temperatures require special measures, such as oil cooling or oil heating.
Axial forces
Forces acting in the direction of an axis.
B
Base frame
The substructure of the lifting table. The base frame drives the forces acting on the lifting table towards the ground.
Bio oil
Bio-oil is biodegradable hydraulic oil. It is used if an environmental hazard may arise due to oil leakage.
Bolt locking mechanism
Bolt locking mechanisms mechanically connect the lifting table to a wall. The lifting table is therefore stable during loading and unloading.
By the customer
See by the Customer-own
C
Capacity
See by nominal load.
CE plug
CE plugs are plugs which are defined in ISO Standard IEC 60309. They are known more colloquially as high voltage plugs or three-phase current plugs.
Column lift
A lifting construction, which cannot be used on scissor lifts and can therefore be very flat.
Component
The individual components of a system.
Construction height
The height of the lifting table when retracted.
Control circuit
The control circuit is connected to the main circuit. It is used for the activation and control of the valves. In most cases, the control circuit has a voltage of 24 V or 12 V.
Control panel
The control panel is where the operating unit of the lifting table is installed. A lifting table can have main and secondary control panels.
Control voltage
The control voltage is the voltage in the control circuit.
Customer-own
Refers to parts or services provided by the customer, e.g. power supply or forklifts.
Cycle rate
Indicates the number of cycles that a table can/should complete per hour.
Cycle time
Indicates the time between one motor start and the next motor start during lifting, or the time between one valve opening to the next valve opening during lowering. For short cycle times during lifting, i.e. several motor starts per hour, it is advisable to implement an aggregate with pressure-less circulation. This way, the engine will continue to run, and the lifting and lowering can be controlled using the valves.
Cylinder
Short form of the lifting cylinder, which operates in the scissor lift.
D
Dead man’s switch
A dead man’s switch is a control method. It is not automatic – the control pulse is generated by buttons. If the button is not repeatedly pressed, no more action will be taken.
Dead weight
The dead weight is the weight of the unloaded lifting table.
Deflecting
The remaining difference in pressure can be deflected by loading or unloading a table.
Door locking
The door locking system locks any existing doors on the lift table or doors on the shaft at the customer’s site.
Double stroke
A complete lifting and lowering cycle.
Double-action cylinder
The cylinder is filled with hydraulic fluid from both sides of the piston. This results in the table being lowered by a hydraulic unit, as opposed to the weight of the platform and the load.
Double-scissor lifting table
Double-scissor lifting tables have 2 scissors – one on top of the other. This design allows greater lifting heights and shorter platform lengths.
Drive frame
Mobile undercarriage, allowing the lifting table to be moved around.
Driving power
See motor power.
Dumping device
A dumping device is a device mounted onto the lifting table for disposing of the load.
Duty cycle
The duty cycle of a technical component is the maximum operating time in continuous operation. The duty cycle of a component can, for example, be limited so that no dissipated heat will be emitted.
E
Effektive stroke
This is the overall height (extended) minus the construction height.
Electrohydraulics
A module consisting of hydraulic and electrical components.
Elevator regulations
Regulate the introduction of new lifts to the market.
Emergency lowering
With emergency lowering, it is possible to lower the platform, even if there is a power failure. Emergency lowering is required for lifting platforms.
F
Filler plates
Are supports for the lifting table, so that it will be balanced (even) when mounted.
Flat form lifting table
A lifting table with a low construction height. They are usually U-shaped, so that a pallet can be placed on the lifting table with a normal forklift truck.
Flat lifting table
See flat form lifting table.
Folding bellows
A pair of bellows is a protective device which is mounted underneath the lifting table platform, and which expands or contracts when the table is raised or lowered. A pair of bellows protects the area below the platform against dust, and also prevents personnel from reaching into the scissor lift. A form of underflow protection, usually used for dust protection.
Foot protection safety edges
Are installed underneath the platform and prevent the platform from crushing feet. As soon as the safety edge is struck, the lowering of the lifting table is stopped.
Freight lift
For the transportation of goods. (Not suitable for passenger transportation).
G
Goods lift
A lift which is not suitable for passenger transportation (alternative standards).
H
Hoist limit switch
The hoist limit switch switches the aggregate off if the lifting table has reached the upper end position.
Hydraulic lifting tables
Lifting tables with an electrohydraulic actuator. The up and down movement is caused by the intervention of a hydraulic cylinder in the scissor lift construction.
Hydraulic lifts
See hydraulic lifting tables
I
Inspection flap
An opening in the upper surface of the platform. The aggregate is more accessible during maintenance or repair work if the inspection flap is open.
Inspection supports
See service supports.
L
Lifting lugs
Lifting lugs can be attached to the lifting table, in order to lift the lifting table into a pit with a crane or similar device.
Lifting platforms
Lifting tables with which personnel can be raised to a specified work height. Personnel may not leave the platform in a raised position (otherwise it would be a lift – a lifting platform is not designed for this!).
Lifting speed
Indicates the speed at which the lifting table raises the load.
Lifting table
A driven lifting device.
Lifting table, mobile
A lifting table with wheels, which enables it to be used in another location.
Lifting table, stationary
A stationary lifting table, which is only used in one location.
Lifting time
The lifting time is the time taken for the lifting table to reach its maximum end position.
Limit switch
Limit switches can limit the minimum and maximum stroke rate.
Load bearing capacity
The load bearing capacity indicates the maximum load which can be raised by the lifting table.
Loading hatch
See overload hatch.
Loading station
See pallet stacker
Loading system lifting tables
These tables are used to load and unload HGVs.
Lower limit switch
The lower limit switch reacts when the lowest position is reached. In most cases, a lower limit switch is not required for the dead man’s mode.
Lowering speed
The speed at which the lifting table is lowered when it is loaded.
Lowering time
The lowering time indicates the time taken for the lifting table to go from its maximum extended position to its lowest end position. The lowering time may vary due to the load on the lifting table. In order to achieve a constant lowering time, a double-acting cylinder is necessary.
M
Maintenance supports
Maintenance supports must be placed under the platform prior to carrying out maintenance or repair work. They prevent the platform from lowering.
Master switch
Unlike the emergency stop button, the master switch cuts off the entire power supply of the system. It is necessary for system maintenance or repairs. The main switch must be lockable so that the machine can be safely shut down.
Material lift
See goods lift.
Module
A ‘module’ is the combination of individual components.
Motor power
The motor power indicates the power of the motor that drives the hydraulic pump.
Motor protection
Motor protection protects the electric motor against mechanical, electrical or thermal overuse.
Motor protector
The motor protector is a circuit breaker that separates the hydraulic motor from the current source, or switches the current source to the motor.
Mounting bolts
Act as a fixed stop for restricting lowering (construction height).
Mounting plate
A mounting plate is a form of platform surface which makes the platform more slip-resistant due to raised nubs.
N
Nominal load
The maximum load capacity of the lifting table.
Nominal pressure
See operating pressure.
O
Operating pressure
The operating pressure is the pressure in the system during normal operation. The operating pressure changes according to the position of the scissors.
Operating voltage
The specified voltage to which the lifting table can be connected.
Overload hatch
Overload hatches are inserted into loading system lifting tables. They bridge the gap between the HGV loading platform and the lifting table platform, so that loading with a forklift truck is possible.
Overload protection
Overload protection is a facility which protects technical devices against mechanical and / or electrical overuse. For lifting tables, overload protection is installed in order to ensure that loads are not too heavy to be lifted. In some models, overloading is indicated with an audible signal.
Overpressure valve
The overpressure valve limits the maximum pressure of the system to the operating pressure.
P
Pallet stacker
A lifting table specially designed for raising and lowering pallets, usually by means of a pallet loading station as part of a conveyor system.
Passenger lift
Personnel and/or loads can be transported by a passenger lift. They are subject to specific regulations.
Pipe break valve
See pipe breakage protection.
Pipe breakage protection
The tube breakage protection is mounted directly on the cylinder of the lifting table. It prevents the sudden lowering of the lifting table in the event of a leak.
Piston rod
The piston rod is the moving part in a hydraulic cylinder. On a scissor lift table, the piston rod is connected to the scissors in order to enable the strokes.
Plant lifting table
A plant lifting table is usually part of a conveyor system. The tables must carry out several stroke cycles (>100/day).
Platform
The upper part of a lifting table, onto which the load is placed.
Platform length
The length of the lifting table platform.
Platform width
Specifies the width of the platform.
Plunger cylinder
The piston rod is simultaneously the piston in a plunger cylinder. Through this construction, a plunger cylinder has a higher level of efficiency.
Pressure gauge
A pressure gauge measures hydraulic pressure.
Pressure relief valve
The pressure relief valve (PRV) restricts the maximum pressure in the system. The PRV is adjustable and prevents damage to the hydraulic components if the operating pressure is unacceptable.
Protection type
Indicates in what kinds of environments (dust / moisture) the lifting table may be used.
Pushbutton
This is integrated into most lifting tables as a standard operating element. Most pushbuttons have “on”, “off” and “emergency” functions, and also have a “dead man’s mode”.
R
Railings
A safety device that prevents personnel or loads from falling.
RAL colours
A normalized colour table, from which the colour of the lift table is selected.
Ramp
It is usually necessary for a lifting table to be driven by a forklift or pallet truck, to compensate for the construction height.
Rebound
The easy lowering of the lifting table when it is loaded in the extended position. This lowering is caused by the compression of the hydraulic oil or the expansion of the hoses, and the deflection of the scissor construction.
Relay
A relay is an electromagnetic switch. A contact is tightened or loosened by a control voltage.
Roll-off safety
Secures a load, e.g. on wheels, before it rolls off. There are manual and automatic systems. While the manual systems are usually pluggable, automatic systems normally have a lever mechanism that extends when the platform is raised.
Roller blind
The roller blind is a form of underflow protection consisting of a spring shaft and a rolled up PVC or fabric curtain that automatically rolls up or unrolls when the platform moves. The roller blind is positioned on the outer edge below the platform.
Rotor (electric motor)
The rotor is the movable (rotating) part of an electric motor. The rotor is also known as an armature.
S
Safety edges
The safety edges are positioned on the outer edge below the platform. The lowering of the platform is interrupted when the safety edges are activated. This therefore prevents, for example, feet being crushed by the platform edge.
Scissor lift table
The scissor lift construction causes the platform to move upwards and downwards, usually by means of a lifting cylinder.
Self-supporting base frame
Enables a lifting table to be brought to a different work station by means of a forklift or pallet truck.
SGL simplified goods lift
A simplified goods lift is used to transport materials between 2 levels.
Solenoid valve
A solenoid valve is an electrically-controlled hydraulic valve.
Starting current
The current that flows for a short time when the motor is started. The starting current (or inrush current) is larger than the operational current.
Stopping accuracy
Indicates how accurately a lifting table stops at a specific point, e.g. defined by the end switch.
Stopping points
Stops are defined points at which a lifting table or material lift stops.
T
Tandem scissor lifting table
Tandem scissor lifting tables consist of two scissor lifts, positioned one behind the other. They are frequently used for long goods which are to be transported.
Terminal strips
Terminal strips are screw terminals for cable connections.
Theatrical lifts
There are special regulations for theatrical lifts. These are not governed by EN1570-1.
Tilt protection
A device underneath the lifting table platform, which prevents the platform from tilting when the load is uneven.
Tilting device
The tilting device is used for tilting the load (without lifting it).
Turntable
A special construction on the lifting table, which allows the turning of the load.
U
U platform
Specifies the platform type. U platforms are normally used with flat lifting tables, so that they can be loaded with a normal forklift truck. In other words, the platform can be transported with a forklift truck without having to go up a ramp, or having to create a pit for the lifting table.
Underflow protection
Provides protection against reaching into the scissor lift. A pair of folding bellows, a mesh curtain or a PVC roller blind is usually used.
V
Viscosity
The viscosity indicates the thickness of a liquid.
Volume flow
The volume flow is the measurement unit that indicates how much volume is flowing through a certain cross-section at a specific time. The volume flow decisively influences the lifting and lowering speed.