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An electric gate is a type of gate that can be opened and closed using an electrically powered mechanism.
Driveway gate openers can be the rollback (sliding) type that retracks a gate along the fence or wall on wheels or bearing, or the swing type that draws the gate open or closed on hinges. They are usually operated by a remote controller or a sensor
Articulated gate openers can be used for gates with wide posts allowing opening in small spaces. [1] An easy system for DIY installers as they are simple to install but not as aesthetically pleasing as other motor designs. Also known as Crank arm operators, they are the main type of automation system sold in France, where low aluminium gates are often used.
Under-gate Jack operators usually control the gate by directly moving the pivot point of each gate leaf. This makes the unit ideal cosmetically and also allows for up to 180 degrees of leaf swing as required. However controlling the pivot point of the gate, is like opening a door by twisting the hinge, and as so is very difficult due to the loads needed at that point. This is highlighted with snap, as the gate has to change direct, as soon as it can. For this reason they are recommend as only suitable for ‘Domestic’ systems in a low risk of abuse environment. Another major consideration with the use of under-gate units is that of water immersion/ingress and warranty voidance. If the water table is high or the drainage of the unit's foundation box inadequate throughout the systems life, then water ingress and unit failure is increased.
Ram or link arm units are usually simpler to install and maintain, they are visible to otherwise ignorant abuse and as they fix down along each gate leaf, they also have an obvious and sometimes major, mechanical advantage over Jacks. Therefore, Rams are far more suitable on Multi-user & commercial systems. Also the manual release is always above ground, making it often more user friendly in operation.
If space is an issue or the driveway behind the gates is on a steep incline, a better option would be a sliding gate. Sliding gates are also very popular in a commercial environment. Sliding gates are also used for cantilever gate systems.
One of the first electric gates was invented by a Canadian Fred W. Watson in 1881. It was designed to be used for railway systems. [2] In 1884, a number of American newspapers reported that the French railway companies were about to adopt an electric gate opener. “A catch connected with an electro-magnet keeps a gate closed,” reported The National Tribune on October 9, 1884. [3] One of the early demonstrations of such gates in the United States was arranged by the short-lived Toulmin Electric Railway Gate Company in 1887, in Baltimore. [4] At the end of the 19th century, electric gates were also used at horse racing tracks. [5]
The first commercial electric gate systems were hydraulic and designed for reliability and ease of use. The cost of the hydraulic systems however meant that other companies started producing more affordable electromechanical alternatives. Hydraulic motors are the preferred choice on large and heavy gates as they can generate high levels of torque, electromechanical systems designed for lower usage domestic installations because they can be produced more cost effectively. [6]
The backbone of any electric gate, whether automatic or not, is the electric gate motor, two distinct motor types exist hydraulic, or electromechanical. This is the electric device which actually enables the electric gate to open and close without having to manually push the gate.
The safety of an automated gate is an important consideration, in the European Union, automated gate safety is specified by a series of European Normalisations. An automated gate that has not been fitted with safety in mind can potentially become a major hazard particularly to untrained users. Various safety devices are available to make sure that your gates meet the highest of European or American safety standards.
Since electric gates operate slowly, they are susceptible to "tailgating" threats, in which a person or vehicle sneaks in behind an authorized user. [7] If security is a concern, a video surveillance camera should be installed. [7]
Electric gates alone, however solid and imposing they may be, cannot guarantee a completely secure environment electric locks, are often needed to boost the locking effectiveness of the gate motors. Electric gates are recommended to be used in combination with other security features to install a full security system. A few of these features are closed circuits with security cameras, additional gates in conjunction with the main gate, electronic keycards and keypads, security guards. [8]
Aside from the additional security features that should go with parking barrier gates, electric security gates often offer safety features like sensors that determine when there is an obstruction to prevent the electronic gate from swinging into a vehicle or closing on somebody's hands. To prevent the electronic gates from being damaged by irresponsible drivers driving fast speed bumps are also commonly placed before gate entrances to slow down vehicles.
In the United States all the electric gate installations must meet Underwriters Laboratories 325 (UL 325) standard while in Europe installations must meet with the Machinery directive 2006/42/EC with EN13241-1 being the regulations concerning gates. [9] [10] [11] [12]
The installer of the gate is responsible for the conformity to regulation, not the manufacturer. The two main EN regulations that then apply are EN 12453 which describes the safety levels that should be observed when installing a gate and EN12445 which describes the testing method that must be undertaken. [13]
The major points are the maximum amount of force at certain test points. Example - a maximum of 400N of force can be applied in the last 50, 300 and 500 mm of travel of a gate, after the initial impact the force must drop to 150N within 0.75 of a second and reduce to 25N within 5 seconds. During the mid travel of a gate the allowable force is 1400N. A full risk assessment of the gates must take place with all crush, cutting points shown to the client with appropriate protection devices offered, a recommended maintenance program should also be provided. Finally the installer must confirm that all electrical equipment fitted has the European CE mark all the time.
To conform to these regulations the gate system must be checked with a calibrated force tester and the full results kept in a technical file for 7 years. If the gate is not tested it does not comply.
Most gate kits can be fitted with safety equipment so that these limits are achieved and so cover that part of EN13241-1.
In September 2010, following two incidents in Bridgend and Manchester, when children were killed by sliding gates, the UK Health and Safety Executive issued 2 safety notices aimed at gate manufacturers and installers, demanding them to comply with the Annex A of BS EN 12453:2001 standard. [14] [15]
In recent years, aluminium has emerged as the material of choice for driveway gates in the UK, and for good reason. One of the key reasons for this shift is the ease with which aluminium gates can meet force limitation guidance. Force limitation refers to the maximum amount of force that a gate can exert on an object or person, ensuring safety and minimizing the risk of accidents or injuries. With lightweight aluminium gates, meeting these force limitation guidelines becomes much more achievable, as they require less force to open and close compared to heavier materials such as wrought iron or steel.
Another advantage of aluminium gates is their compatibility with brushless motor operators. Brushless motors offer numerous benefits over traditional brushed motors, including higher efficiency, longer lifespan, and reduced maintenance requirements. Aluminium gates, being lightweight, work well with brushless motor operators, as the motors do not have to work as hard to maneuver the gates. This not only enhances the overall performance and reliability of the gate system but also contributes to energy efficiency, leading to cost savings in the long run.
Furthermore, aluminium gates provide additional advantages such as resistance to rust and corrosion, making them a durable and low-maintenance option. They are also highly customizable, allowing homeowners to choose from a wide range of designs, colors, and finishes to match their aesthetic preferences. Additionally, aluminium is a sustainable material as it can be recycled, aligning with the growing trend of eco-consciousness in the construction and home improvement industries.
Overall, the combination of meeting force limitation guidance more easily, compatibility with brushless motor operators, durability, low maintenance, and customizability has made aluminium the material of choice for driveway gates in the UK. With its numerous benefits, it offers homeowners a reliable, safe, and aesthetically pleasing option for enhancing the security and curb appeal of their properties.
An industrial robot is a robot system used for manufacturing. Industrial robots are automated, programmable and capable of movement on three or more axes.
A forklift is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various companies, including Clark, which made transmissions, and Yale & Towne Manufacturing, which made hoists.
An actuator is a component of a machine that produces force, torque, or displacement, when an electrical, pneumatic or hydraulic input is supplied to it in a system. The effect is usually produced in a controlled way. An actuator translates such an input signal into the required form of mechanical energy. It is a type of transducer. In simple terms, it is a "mover".
A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows. The controller adjusts the phase and amplitude of the current pulses that control the speed and torque of the motor. It is an improvement on the mechanical commutator (brushes) used in many conventional electric motors.
A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor.
A jackhammer is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. Hand-held jackhammers are generally powered by compressed air, but some are also powered by electric motors. Larger jackhammers, such as rig-mounted hammers used on construction machinery, are usually hydraulically powered. These tools are typically used to break up rock, pavement, and concrete.
A garage door opener is a motorized device that opens and closes a garage door controlled by switches on the garage wall. Most also include a handheld radio remote control carried by the owner, which can be used to open and close the door from a short distance.
Power steering is a system for reducing a driver's effort to turn a steering wheel of a motor vehicle, by using a power source to assist steering.
A punch press is a type of machine press used to cut holes in material. It can be small and manually operated and hold one simple die set, or be very large, CNC operated, with a multi-station turret and hold a much larger and complex die set.
A linear actuator is an actuator that creates linear motion, in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals such as disk drives and printers, in valves and dampers, and in many other places where linear motion is required. Hydraulic or pneumatic cylinders inherently produce linear motion. Many other mechanisms are used to generate linear motion from a rotating motor.
An electronic speed control (ESC) is an electronic circuit that controls and regulates the speed of an electric motor. It may also provide reversing of the motor and dynamic braking. Miniature electronic speed controls are used in electrically powered radio controlled models. Full-size electric vehicles also have systems to control the speed of their drive motors.
A swing-door operator is a device that operates a swing door for pedestrian use. It opens or helps open the door automatically, waits, then closes it.
A motorized scooter is a stand-up scooter powered by either a small internal combustion engine or electric hub motor in its front and/or rear wheel. Classified as a form of micromobility, they are generally designed with a large center deck on which the rider stands. The first motorized scooter was manufactured by Autoped in 1915.
An active suspension is a type of automotive suspension that uses an onboard control system to control the vertical movement of the vehicle's wheels and axles relative to the chassis or vehicle frame, rather than the conventional passive suspension that relies solely on large springs to maintain static support and dampen the vertical wheel movements caused by the road surface. Active suspensions are divided into two classes: true active suspensions, and adaptive or semi-active suspensions. While adaptive suspensions only vary shock absorber firmness to match changing road or dynamic conditions, active suspensions use some type of actuator to raise and lower the chassis independently at each wheel.
Brake-by-wire technology in the automotive industry is the ability to control brakes through electronic means, without a mechanical connection that transfers force to the physical braking system from a driver input apparatus such as a pedal or lever.
A tail lift is a mechanical device permanently installed on the rear of a work truck, van, or lorry, and is designed to facilitate the handling of goods from ground level or a loading dock to the level of the vehicle bed, or vice versa.
An elevator or lift is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack.
A home lift not to be confused with a home elevator is a type of lift specifically designed for private homes, where the design takes into consideration the following four factors:
An underwater thruster is a configuration of marine propellers and hydraulic or electric motor built into or mounted to an underwater robot as a propulsion device. These give the robot movement and maneuverability against sea water resistance. The main difference between underwater thrusters and marine thrusters is the ability to work under heavy water pressure, sometime up to full ocean depth.
In engineering, a solenoid is a device that converts electrical energy to mechanical energy, using an electromagnet formed from a coil of wire. The device creates a magnetic field from electric current, and uses the magnetic field to create linear motion.
