Elevator Door System Parts

There are a number of different parts that make up an elevator door system. These parts include the Encoder, Linear motor, Sheave, and Control unit. Each part has a different function and is important for your elevator to function properly. Luckily, there are many different manufacturers that offer elevator parts, making it easy to find the right one for your particular needs.

Linear motor

The present invention provides a linear motor that counterbalances the torques caused by driving the elevator door at locations other than its center of gravity. It does so by utilizing the attractive force between the primary and secondary parts of the linear motor. As a result, the torque is more accurately balanced throughout the travel distance of the door.

Generally, the primary core part of a linear motor is a double-sided piece that consists of a laminated iron core with matching teeth and slots. The two sides are then connected by coils wound around the core. The coils can be arranged in a variety of configurations.

The dual secondary linear induction motor has a relatively short length in the perpendicular direction, comparable to the width of the elevator door. The dual-sided linear motor is installed on brackets in order to operate the elevator door. The motor is used to control the opening and closing of elevator cars.

Another important component of the elevator door system is the sheaves. These devices are adjustable, allowing the door to slide with less strain on the motor. They can also be manually operated in the event of a power outage. They are also inexpensive and relatively simple to manufacture. The linear motor is used in many elevator installations.

The double-sided linear induction motor for elevator door system comprises a primary and dual secondary with teeth and slots on both sides. The primary part is mounted on the elevator car, while the secondary is mounted on the elevator door. These parts are connected to one another in an electrical configuration that is selected.


The Sheave for elevator door system parts is a key component in the mechanism that opens and closes the elevator doors. The unit works by turning a motor which turns a drive sheave. The drive sheave is a large, gearless sheave that can be 0.6 to 1.2 meters (2-4 feet) in diameter. It is turned by a powerful electric motor which needs to run at 50 to 200 revolutions per minute.

A Sheave is used to move elevator doors, so it should be durable and well-built. It should also have a smooth radius and rounded outside diameters to minimize friction. It must also have a thick base so that it can support the cable. Lastly, it should have thin side grooves so that the cable can easily move over the sheave.

Sheaves are the most important part of an elevator door system. They are located above the elevator shaft and move when the elevator car lifts or lowers. A counterweight is also part of the system, which reduces the strain on the elevator motor. The Sheave is a pulley with grooves on it, and it works in tandem with the counterweight to control the speed of the elevator.

A Sheave can have many different styles. It can have a smooth radius, which will minimize friction, or it can have a rounded outside diameter, which will protect the rope from damage. The Sheave can also be made of different types of rope, including wire rope.

Different sheaves are used in different situations. Some are used for light loads, while others are used for heavier loads. A Sheave can be straight, domed, or tapered, depending on the type of load. Different types are made of different materials and have different strengths.


An elevator door encoder is a unit used to store data about a motor. This data includes the electric control parameters and the gear information. It can also be used to calculate the highest torque the gear can sustain. This information is then read electrically into the control unit for the elevator door.

An encoder is an essential part of an elevator door system because it provides feedback for the automatic doors. These doors operate using a small motor, usually mounted on the top of the elevator car. Encoders monitor these motors to make sure that the doors open and close fully. An encoder has several important features, including a low weight, hollow bore design, and high resolution.

The HS35R encoder is ideal for use in elevator systems. This model is easy to install and enables you to get the job done quickly and cost-effectively. Another advantage of this encoder is that it doesn’t require any lubrication, which means that it is safer for your elevator and for the environment.

The encoder in an elevator door system helps regulate the door’s speed and direction. It works by sending a signal from an encoder to a control device that can then read it. This signal is used to determine speed, direction, and send commands. This provides reliability and accuracy in determining the location and travel speed of an elevator. The encoder is usually connected to an electronic PCB which controls the speed of the elevator motor.

Encoders can provide two types of signals – absolute and incremental. The former indicates the direction of movement, while the latter provides a reference for the position. Absolute encoders are more accurate and use a different “word” for each position.

Control unit

The elevator door drive system is responsible for opening and closing the elevator car doors. Its power demands are approximately 560 Ws and average 33 Ws per cycle. The elevator door system uses a power storage device to meet peak power demands. This device collects low voltage DC power over time and delivers it to the elevator system.

Different field devices are used to control the various components of the elevator system. These field devices can be identical or different and may be interconnected along the elevator shaft. The field devices may be arranged in a ring topology with corresponding electrical connections that cross each other. The number of field devices used in the elevator door system will depend on the overall size and type of the system.

The elevator door controller system includes three main components: a controller 40, a car 42, and a travelling cable 44. The controller is usually located in the machine room area or at the upper elevator hoistway. It is powered by a low-voltage DC current that travels through two DC power wires and a battery. The car also includes an operating panel 52 and a door drive system 53.

In addition to controlling the elevator doors, the control unit is also a safety monitoring unit for the elevator system. It monitors relevant operating parameters and sensor signals and implements relevant operating states using actuators. This allows for a safer elevator system. It also increases the efficiency of the elevator car. Its auxiliary equipment, such as slack rope switches, is designed to monitor the elevator doors for proper positioning within the elevator shaft.

Field devices used in elevator systems may be connected to the control unit via a ring topology. This method allows for rapid signal transmission, which is especially important in elevator systems.


The rollers are a critical part of the elevator door system. These components are mounted on the elevator cab and roll along the rail to open and close the doors. A resilient track supports the roller, allowing it to move efficiently and smoothly along the rail. The rollers are also supported by a motor assembly that provides rotational driving force. The motor is controlled by a controller to ensure the correct opening and closing speeds.

There are different kinds of motors that are used for the rollers in the elevator door system. For example, a low-range door system may use a single motor roller of fifty watts, while a mid-range door system may use two or four motor rollers to reach 200 watts. A high-end door system may also feature counter-rollers.

The system shown in FIG. 5 and 6 is similar to the elevator door system shown in FIGS. 3 and 4. The elevator door 202 is coupled to a hanger 204 that is spaced frontward from the elevator car’s front face. The upper roller track 206 is mounted to a header bracket on the front face of the elevator car.

A roller guide for an elevator door system can have several motor rollers that synchronize their movement. The roller guide can be a simple mechanism that has many advantages. It also ensures a high degree of quiet operation. It also has elastically yielding rail running surfaces, which allow it to be deformed in the elastic range of the construction material.

An elevator door system includes the rollers and counter-rollers that assist the pulley system in moving the elevator door. The counter-rollers are spring-loaded and preferably comprise of a high-traction material.

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