1、 Overview of telescopic doors
Retractable door is a type of door that can be freely moved and retracted, used to control the size of the door opening and achieve interception and clearance of pedestrians or vehicles. It mainly consists of the door body, driving motor, slide, control system, etc. Telescopic doors, with their unique design and flexible functionality, are widely used in public places such as industrial and mining enterprises, government institutions, entertainment venues, hotels, and restaurants.

2、 Features of retractable doors
Material and structure:
The door body is made of high-quality stainless steel and aluminum alloy special profiles, which are sturdy, durable, and not easily corroded by polluted gases.
Adopting the principle of parallelogram articulation, it has flexible expansion and contraction, and a large stroke.
Drive system:
Adopting special motor drive, worm gear reduction, providing stable power support.
Equipped with automatic or manual clutch, it can automatically or manually open and close in case of power outage.
Control system:
Equipped with a control board, button switches, and wireless remote control devices as needed.

It can be equipped with a scrolling display screen, displaying display content of 300-500 words.
Security protection:
Equipped with intelligent infrared probe anti-collision device, it can automatically return to operation when encountering people or foreign objects for 20-30cm.
The standard structure ensures the robustness of the cross pipe and reduces operating noise.
3、 Classification of retractable doors
Stainless steel ordinary electric telescopic door
Stainless steel segmented electric telescopic door
Aluminum profile ordinary electric telescopic door
Aluminum profile segmented electric telescopic door
4、 Control method of telescopic door
Control handle, line control
Wireless remote control, common 433MHz wireless remote control handle control
External system control, such as the automatic release system of electric doors, is achieved through embedded control systems or computer control. The computer automatically recognizes the vehicle license plate and opens the door automatically.

5、 Analysis of advantages and disadvantages of retractable doors
Advantages:
High safety: adopting various safety protection devices, such as infrared detectors.
Aesthetics: The appearance is exquisite and beautiful, meeting different aesthetic needs.
Strong flexibility: can be remotely controlled or manually operated.
Easy to maintain: Adopting a modular design, it is easy to disassemble and replace.
Space saving: The folding function saves a lot of usage space.

Disadvantages:
High manufacturing costs: Manufacturing and material costs are high.
High maintenance cost: Regular testing and maintenance are required.
Not suitable for use in adverse weather conditions: Poor wind resistance and insulation.
Short service life: It is prone to damage, deformation, and other situations after a period of use.
6、 Application field of retractable doors
Expansion doors are widely used in industrial and commercial buildings and public places, such as shopping malls, office buildings, hospitals, subway stations, etc. Their advantages lie in small space occupation, easy installation, beautiful atmosphere, and the ability to improve safety and convenience through intelligent control.