What is a screw elevator? The difference between a screw elevator and a cable elevator

Screw elevators (tạm dịch: thang máy trục vít) are gradually becoming the ideal choice for renovated houses or houses with limited space, thanks to the outstanding advantage of not needing a deep pit. With a compact, space-saving design, this type of elevator is easy to install without changing the structure of the house.

However, if you prioritize speed, a cable elevator is a more prominent choice. Each type of elevator has its own strengths, and only when you clearly understand the differences between screw elevators and cable elevators can you make the most suitable decision for your home. Let's explore and choose the optimal solution in this article with Thuan Phat!

What is a screw elevator?

Screw elevators are a type of home elevator, specially designed to meet the needs of moving in narrow spaces such as townhouses, villas, or buildings with limited area. This type of elevator operates based on the principle of the screw and bolt system. When the electric motor is activated, the belt will drive, pulling the gear system that meshes between the screw and the rotating bolt. This meshing creates thrust, helping the elevator cabin move up and down vertically.

What makes the screw elevator different and attractive is that it only requires a shallow pit of 0.1m and an installation area of ​​only 1m2. This is an ideal solution for houses that need to maintain the original structure but still want to upgrade living facilities. In addition, this type of elevator is also quick to install thanks to its simple operating system and compact structure. This helps to minimize construction and installation time, while reducing complex construction requirements, suitable for projects that need to be completed in a short time.

With the ability to save up to 30% of space compared to traditional elevators, screw elevators not only help optimize space but are also a smart choice in terms of technology and aesthetics.

Structure of screw elevators

The structure of screw elevators is very simple, including the following parts:

Screw shaft: This is the main part that helps move the cabin. Usually made of stainless steel, the screw shaft is mounted vertically and operates based on the rotation principle of an electric motor. According to the standard, the moving speed of a screw elevator can reach from 0.15 to 0.3 meters/second.

Elevator cabin: Depending on the elevator load, the cabin is designed compactly to suit the family space.

Motor: The electric motor, located at the top of the system, controls the screw shaft to operate smoothly up and down. The motor capacity is usually from 1.5 kW to 2.2 kW, ensuring enough power to safely lift and lower the cabin.

Control panel: The elevator control panel is mounted outside or inside the cabin, making it easy for users to select the floor to move. The control panel also has the function of displaying necessary information, such as the position of the cabin or operating status.

Guide rail: The guide rail system helps the cabin move straight and steadily along the screw shaft.

Safety system: Includes emergency brake, load sensor and other safety sensors, ensuring absolute safety for users in all situations.

The operating principle of screw elevators

The operating principle of screw elevators is quite simple. When the motor rotates, the screw will rotate clockwise or counterclockwise, supporting the cabin to go up or down. Specifically, the operating principle of this type of elevator will be as follows:

Starting motor: When you press the elevator call button, the electric motor will start working.

Transmission: The motor transmits the drive belt to the gear system.

Rotating screw and bolt: The gear system makes the screw and bolt rotate.

Moving cabin: The bolt moves along the screw, pulling the elevator cabin up or down depending on the direction of rotation of the screw.

The electronic control system will control this entire process, from the speed to the stopping position of the cabin. When the cabin reaches the desired position, the brake system will be activated to keep the cabin in that position safely. If there is a problem such as a power failure, the safety brake system will be activated to prevent the cabin from falling freely.

Differences between screw elevators and cable elevators

Travel speed

Screw elevators: The travel speed of screw elevators is quite slow, usually only reaching 0.15 to 0.3 m/s. This can make moving from one floor to another take a long time, especially in houses with 3 floors or more.

Cable elevators: The speed of cable elevators is much better, reaching 0.6 to 1 m/s or even faster. This helps save travel time and brings a more comfortable and convenient experience to users.

Load capacity

Screw elevators: Have the advantage of not requiring a machine room or only needing a shallow pit. This can help save construction space, suitable for small houses or those that cannot dig deep holes. However, the cabin size is often limited, only enough space for 1-2 people to move.

Traction elevators: Although requiring a pit (usually 600 mm to 1200 mm) and a small machine room, this type of elevator can be designed with larger cabins and higher loads (from 250 kg to 650 kg). In addition, thanks to the counterweight design and space optimization, traction elevators can still be harmoniously integrated into many different spaces.

User experience

Screw elevators: With slow speeds and noise from friction from the screw shaft, the experience of using a screw elevator can cause discomfort to users. At the same time, the small cabin area also limits the comfort of movement, especially for families with many members.

Cable elevators: Thanks to their fast speed, smooth operation and spacious cabin, traction elevators provide a better user experience. You can move comfortably between floors without feeling limited by space or time.

Although screw elevators have some advantages such as not requiring a deep pit or only needing a small installation area, considering many important factors such as speed, load capacity and user experience, cable elevators are the superior choice. With the ability to move quickly and stably, cable elevators not only meet the needs of families but also ensure long-term value for the house. In particular, Thuan Phat is currently providing many lines of cable elevators for family use that are compact in size but still optimize functionality, safety and aesthetics, bringing a perfect experience to users.

Conclusion

Both screw elevators and cable elevators bring their own benefits, depending on the needs and space conditions of each family. To make the right decision, it is important to clearly understand the characteristics of each type of elevator and determine your own priorities. With advice from Thuan Phat, you can choose the optimal elevator solution, suitable for the space and meeting the needs of long-term use. Do not hesitate to contact the hotline: 0939.612.555 for more detailed advice.