ADE Heavy Duty Linear Electric Actuators – MECCO

ADE Heavy Duty Linear Actuators,

ADE linear Electric Actuators

ADE HEAVY DUTY LINEAR ELECTRIC ACTUATOR

ADE’s electric lifting actuator sets standards.
At an ever increasing number of operation sites.
Some technical developments which were developed many decades ago are still driving today’s progress. One such example is ADE’s screw-operated electric lifting actuator which the company developed in 1965 and which it has been manufacturing ever since. To the customer’s specific requirements and for a multitude of industrial applications. Always benefiting from these unrivalled properties: fast, easy commissioning, extremely unsusceptible to malfunctions, even in the harshest applications, superior environmental performance.

This wealth of experience has formed the ideal basis for the ground-breaking success of ADE’s electric lifting actuator as a drive concept for lock and weir systems. In Europe alone, we have equipped an impressive 200+ lock and weir systems since 1995.

This success is the ultimate driver for the future. In line with our motto: Full speed ahead for pioneering solutions for a wide range of applications.

ADE-HEAVY-DUTY-LINEAR-ELECTRIC-ACTUATOR-5

Our products incorporate a number of solutions in connection with electric lifting actuators as standard.
Up to 80 kN
Up to a stroke 7 m
The constantly increasing pressure to rationalise and automatise has allowed the demand for reliable, low maintenance drives for linear movement to grow rapidly in recent years.

The ADE electrical linear actuator which operates on the screw principle presents, in many cases, a technically and economically more favourable variant compared to the other drive systems, in particular due to the low susceptibility to failure and, therefore, offering greater operation security but also due to the low operation and maintenance costs arising from this.

The built-in screw is operated by an electric motor. With the screw nut as well as with the precisely directed piston rod bound to it, the rotating movement is converted into a linear movement and transferred to the element to be moved.

As a result of the closed construction, the device is insensitive to water, dirt and dust. Depending on the nature of the surrounding conditions, special materials, lacquering and possibly additional protection regulations are used.

Available for selection are an optimally staged lift actuator program with lift forces from 4 kN to 80 kN, stroke lengths over 3,000 mm and lifting speed up to 800 mm/sec. Linear actuators can be optionally fitted with trapezoidal screw, ball screw or planetary roller screw drives depending of the operation.

Application fields are found in all industrial sectors. Rapid, precise positioning tasks with added servomotors or stepper motors (robotics, handling), robust applications in open space (waste water treatment technology, mining) as well as fields with high hygienic demands (food and medical technology) are typical cases for operation.
In addition to a comprehensive standard program, ADE has, by virtue of its vast experience, a large selection of special designs for the most diverse operation cases.

Where the ADE electric linear actuators
are declared standard.
Up to 1.600 kN
Up to a stroke 8 m
ADE-WERK has been producing screw-driven electric linear actuators in special, customised applications, mainly for the multiple industrial use, since approx. 1965. The extensive experiences in this field of drive technology were the basis for the groundbreaking success of the ADE electric linear actuators as the drive concept for navigation locks and barrages since their first installation in 1995.

ADE-Actuator, weir of Liepe (Germany) (photo WSA Eberswalde)

Compared to the previously used outdated electromechanical drives and the electro-hydraulic drives installed since the 1980s, which are hazardous to the environment, these electric linear actuators, which were specially conceived for this application and which have in the mean time become standardised, have prevailed. ADE’s electric linear actuators have proven themselves repeatedly and become indispensable due to their quick and uncomplicated commissioning procedure and minimal error-rate, even under very tough and challenging operating conditions.

The previously used, conventional electromechanical drive, which consisted mostly of open reduction stages, swivelling segments, and driving rods, was not only problematic with regard to environmental pollution but also required a lot of maintenance – due to its open grease lubrication. In case of an electric oil-hydraulic drive, leakages can never be excluded and pose a considerable potential danger. Oil and tube change intervals, as well as regular leakage checks, increase the amount of maintenance required.

In this way, the further development to the currently used ADE electric linear actuators, with all of its known advantages, became a necessary and logical consequence.The ADE electric linear actuators, as a completely encapsulated, electro-mechanical drive unit, consists basically of a drive motor, screw drive with bearing, housing and the extendable and retractable piston rod as the external power transmission element.

Its essential advantages compared with the previous, conventional drive variants along the waterway, are documented by numerous references in the area of hydraulic steel structures. In the mean time, 900 drives of this kind have been delivered and are used all over Europe in over 150 sluices and weir systems.

Basic design and function: ADE linear electric actuators for hydraulic steel structures

Item 1 Motor / Gearbox
Induces torque at screw drive. Depending on the direction of rotation, it causes the actuator to travel forwards or backwards.

Item 2 Spring assembly
Integrated spring assembly, protects actuator against operational axial impact loads.

Item 3 Bearing

Item 4 Screw drive /piston
The screw drive causes the actual move. and generates axial force at torque.

Item 5 Housing
Its task is a general protection against external influences. The housing is used for guiding the piston.

Item 6 Piston rod
The piston is connected to the piston rod, which itself moves inwards and outwards.

Item 7 Guiding of piston rod
Its task is to guide the piston rod and at the same time it is a sealing element, also protecting against dirt and aggressive medium.

Item 8 Swivel- / fork head
Trough the pivot head / fork head, the power is fed to the part to be moved.

Mini lift gear load up to 1000 daN
Drive unit with a direct current gear motor for simple movements with low duty cycle. Duty cycle of max. 20%
performance with rotating trapezoid threaded drive screw (type “d”) or with stationary trapezoid threaded drive screw (type “s”).
Various sizes for different operation cases:
Mini Lift Gear MT-10-d
12 Volts or 24 Volts closed design max. 120 daN
Mini Lift Gear MT-10-s
12 Volts or 24 Volts open design max. 120 daN
Mini Lift Gear MT-16-d
0-48 Volts closed design max. 1000 daN
Mini Lift Gear MT-16-s
0-48 Volts open design max. 1000 daN

Numerous accessories and special designs complete the delivery program:

– Electronic limit switches for MT-10-d; MT-10-s, MT-16-d, MT-16-s
– Electronic shut down in case of overload and at the end position
– Housing for electronic limit switch is without a control panel
– For direct current 12 volts or 24 volts
– With a transformer for alternating current 230 volts

Ancillary equipment for MT-10-d; MT-10-s,
– Swivel bracket
– Pedestal bearing

Ancillary equipment for MT-16-d and MT-16-s
– Pedestal bearing MT-30301
– Bearing pin MT-30302
– Pivot bearings MT-30303

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ADE HEAVY DUTY LINEAR ELECTRIC ACTUATOR

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What Is An Actuator?Different Types Of Actuators Definition
1. What Is An Electric Linear Actuator And How Does It Work?

2. Common Styles Of Electric Linear Actuators

2.1 Parallel Drive Actuator

2.2 Right-Angle Actuator

2.3 Inline Actuators

2.4 Gear Motors

2.5 Dual Motor

2.6 Linear Slide Actuator

2.7 Electric Lifting Column

3. How To Choose The Right Electric Linear Actuator For Your Application?

4. Everything Is Variable; Everything Is Adaptable

What Is An Electric Linear Actuator And How Does It Work?

An electric linear actuator is a device that converts an AC or DC electric motor’s rotational motion into linear motion. The linear motion is created by rotating the actuator’s screw via the motor. The screw turns either clockwise or counter-clockwise, and this causes the shaft (which is basically a nut on the screw) to move in a line, up and down, creating the push/pull effect for the load.

Anywhere a machine pushes or pulls, raises or lowers, roughly positions, or rotates a load, an electric linear actuator can be used. Electric linear actuators also provide safe and clean movements with accurate motion control and full operator control. They are energy efficient and have a long lifespan that requires little to no maintenance.

MECCO specializes in electric linear actuator solutions best suited for medical, industrial, workplace, and mining applications.

There are many components and options to an electromechanical linear actuator. MECCO is a vertically integrated company. We can customize, design, and have manufactured all of these components for customers depending on their application needs. We can have manufactured motors and components, including the spindle and drive nut, for the electric actuators we sell. Also performed in-house, We make sure all PC board manufacturing is of the highest product quality and durability.

We will discuss a new subject in each section related to an electric linear actuator’s basics and the factors to consider when purchasing components for a linear motion system. This section of the white paper will discuss an electric actuator’s common styles and how to select the right actuator for your applications. Next, we will review the internal and external components of a linear actuator. Then, we will cover the safety-related options that can be added to an actuator.

Following that, we will explain the various actuator load and speed characteristics to consider and how they can be adjusted to meet the applications’ needs. We will follow that with the multiple levels of IP ratings an actuator can have for liquid and dust protection, as well as lubrication that goes into an actuator. Finally, we will discuss different position feedback sensors used in electric linear motion systems.

Common Styles Of Electric Linear Actuators

MECCO various linear actuators that are all interchangeably customizable to fit a customer’s application needs. Some common styles of electric or electromechanical linear actuators include:

Parallel Drive Actuator
The motor is directly parallel to the drive spindle. Typically, these types of electric linear actuators are spur or spiral gear with more gear ratio options. Parallel drive actuators allow for a broader range of loads and speeds. However, parallel drive actuators with spur gear can operate louder than spiral gear and worm gear driven actuators.

MECCO’s Parallel Drive Actuators with Spur Gear

MECCO’s Parallel Drive Actuators with Spiral Gear

Right-Angle or “L” Drive Actuator
The motor is set perpendicular to the drive spindle. Typically, these types of electric linear actuators are worm gear driven. Worm gear-driven motors have fewer gear ratio options. Because of that, they are less efficient than spur gear-driven motors but operate with low noise. One of the key benefits of a worm gear driven, right-angle electric linear actuator includes an increased self-locking ability.

Inline Actuators
An electric inline actuator has a longer retracted length but is explicitly designed to fit into smaller or compact spaces. The inline actuator is typically made up of a motor, planetary gear assembly, and drive spindle. These usually operate at a higher noise level.

Gear Motors
Gear motors allow for economical and flexible designs when matching them with various external spindle assemblies. The compact design is typically worm gear driven and an excellent choice for mechanical synchronization.

Dual Motor
A dual motor linear actuator creates movement in two directions, either individually or simultaneously. They are also typically worm gear-driven motors, which operate at a lower noise level. While these generally are more expensive per unit, the total system cost will be more economical due to fewer parts.

Linear Slide Actuator
This actuator style creates a linear movement without the use of an outer tube. It utilizes a plastic slide mechanism that travels across the actuator, attached to the frame of common household furniture (such as power recliners and couches).

Electric Lifting Column
MECCO’s lifting columns catering to the industrial, medical, and ergonomic markets. An electric column’s primary advantage is its ability to lift high loads vertically while retaining a high degree of stability and bending movement compared with linear actuators. Our industrial and medical grade columns are designed for applications such as medical and bariatric beds and height-adjustable industrial workstations, where worker and patient safety is essential.

How To Choose The Right Electric Linear Actuator For Your Application?

Choosing the right electric actuator is an essential part of any successful automation project. There are many actuator models – parallel, L-shaped, or inline motor –used in a wide range of applications. Each project need is unique. To help you select the right actuator, consider the application and its technical constraints: speed, load, duty cycle, available space, environment, and more.

1. Define the Required Load
The load to be supported is a determining factor in the actuator choice and will define its various components (motor, nut, spindle, gears, ball bearings, etc.).

It is crucial to define which direction the actuator will operate (pull, push, vertical or horizontal movement) and over which length. It will also depend on the diameter of the actuator’s inner and outer tubes. All these factors influence the actuator’s ability to lift loads and have an impact on its strength.

2. Define the Required Speed
The desired speed is a fundamental parameter in the selection of the actuator.

Not all mechanisms or materials are compatible with high speeds. High speed with a high load can cause premature wear of the actuator and affect its lifetime. Therefore, each device has speed and load that must not be exceeded to protect it from material damage. This speed depends, among other things, on the pitch and the motor characteristics.

3. Define the Duty Cycle
The duty cycle defines the ratio between the on-time and off-time of a device and varies considerably from one application to another. The duty cycle is essential to determine the actuator, its materials, and its mechanisms. It helps give the equipment an optimal lifetime and limit mechanical parts’ wear or possible overheating.

Electric actuators with parallel motors, for example, with their spur gears, will withstand a higher duty cycle and have a higher number of cycles.

4. Define the Available Space
The system’s available space also informs the choice of the actuator.

In addition to load, stroke, and speed, it is necessary to consider whether the actuator will have to operate in a restricted space and if there are any space restrictions to allow integration into the application.

For example, inline electric actuators, due to the motor’s alignment with the spindle, are more compact, making them ideal for tight installation spaces. An actuator’s mounting dimensions depend on the mounting configuration (inline, L-shaped, or parallel motor).

5. Define the Environment
The environment in which the equipment will operate is a crucial parameter to choose the right electric actuator.

Questions to consider: Does the equipment operate indoors or outdoors? Is it exposed to dust, solid contaminants, or moisture? Does it have to withstand intensive cleaning with detergents or high-pressure cleaning? Depending on the environmental requirements, the materials used and the ingress protection (IP) rating will differ. Does it require a silent operation? For example, L-shaped electric actuators, with their plastic worm gears, provide a quieter movement, ideal for medical or domestic equipment.

Everything Is Variable; Everything Is Adaptable

The choice of an electric actuator depends on many parameters. It is important to choose a linear actuator that meets the application requirements. Every application includes a list of requirements that must be met to choose the right electric actuator. Budget is also a factor in project planning. Some unavoidable technical constraints will require a larger budget. The important thing is to evaluate all these parameters to create the most suitable device.

We hope this has helped you develop a better understanding and foundation for electric linear actuators and their incorporation into linear motion systems.