In the 18th century, mechanical forces began to be used for the development of lifts. In 1743, France’s Louis XV authorized the installation of a balancer lift in a private palace in Versailles.
In 1833, a system using a reciprocating rod lifted miners in the Harz Mountains region of Germany.
In 1835, a belt-pulled lift known as the "windlass" was installed at a factory in the United Kingdom.
In 1846, the first industrial hydraulic lift appeared. Then other power lifting devices followed soon afterwards.
In 1854, U.S. mechanic Otis invented a ratchet mechanical device and exhibited a safety elevator at the New York Trade Fair.
In 1889, when the Eiffel Tower was built, steam-powered elevators were installed and elevators were used.
In 1892, the lifting equipment for the Astiello Hill in Chile was built. Until now, 15 lifts still use mechanical equipment more than 110 years ago.
After the lift is installed, it shall be tested and accepted according to the procedure. From the current procedural point of view, one is self-inspection. The installation unit shall carry out self-inspection, commissioning and commissioning according to the safety technical standards and the relevant requirements of the installation and operation instructions. Examine the quality and accuracy of the installation of the foundation and attached wall brackets and lifting racks, and conduct technical tests (including drop tests) according to the prescribed procedures. The second is self acceptance. The user unit shall organize the relevant units such as the leasing, installation, and supervision to carry out the inspection and acceptance, or entrust an inspection and testing institution with corresponding qualifications to carry out the acceptance. The third is inspection. Construction lifts shall be qualified for inspection and inspection by qualified inspection and testing agencies. The testing organization shall attach state descriptions and data to the inspection conclusions to make the inspection behavior traceable. Inspection and inspection agencies and inspection and inspection personnel are legally responsible for the results of inspection and testing and the conclusions of the inspection. The fourth is to release the use license before they can be put into use. Through the establishment of standards, standardized testing methods; through the development of the system, standardize the management of test behavior; through inspection and inspection, to limit and eliminate the problem equipment, eliminate equipment sick operation. Construction lifts can only be put into use after they have passed the experience. They must not be used without acceptance or acceptance.
The earliest lifts used manpower, animal power, and hydraulic power to increase weight. The lift device has been relying on these basic power methods until the industrial revolution.
In ancient Greece, Archimedes developed improved rope and pulley-operated lifting devices, which use winches and levers to wind the lift rope around the bobbin.
In 80 AD, gladiators and wild animals rode to the height of the Arena in the Roman Coliseum on the original lift.
The medieval record includes countless people who lift lifts and patterns that provide for isolated sites. One of the most famous is the lift in the monastery of St. Barlaam in Greece. The abbey is located on the top of a mountain about 61 meters above the ground. The hoist uses baskets or cargo nets to transport people and goods up and down.
Characteristics and Advantages
(1) Intelligent control design: adjustable main parameter and secondary parameter automatically according to the weight of door leaves;
(2) Low noise: Special static sound track, integration of motor, worm-gear and retarder.
(3) Anti-clamping function: automatically reverse when meeting barriers;
(4) Unique electronic motor lock: the motor will lock up when the door is forced to open.(controlled by remote or switch)
(5) Tighten force: seal door when closed, power consumption approximately 10W under standby;
(6) Advanced brushless motor(36V,100W) can automatically adopt different heavy door leaves;
(7) Bi-doors inter-locking: one of the door leaves always remains closing;
(8)Safety sensor terminal: sensor stops working when door closed;
(9)Unique coating technology: never rusty;
(10)Easy and convenient to install;
(11)Working Process: when the door leaf closes to the right place, the door leaf will slightly shift to the door frame and the ground. The rubbers on the four sides of the door leaf will completely combine with door frame and ground, which ensures air tightness. When the door is open, the rubbers will separate from door frame and ground, which avoids contraction on the ground.
Technical Specification
|
Specification |
Light Duty |
Heavy Duty |
||
|
Rang of the Door |
Single-Leaf |
Double-Leaf |
Single-Leaf |
Double-Leaf |
|
Door leaf max weight |
100kg |
100kg x 2 |
200kg |
200kg x 2 |
|
Mounting Method |
Surface mounting or built-in mounting |
|||
|
Open Width |
700-2000mm |
650-2000mm |
750-2000mm |
650-2000mm |
|
Power Supply |
AC 220v ± 10%, 50-60 Hz |
|||
|
Opening Speed |
300-500mm/s (adjustable) |
|||
|
Closing Speed |
250-550mm/s (adjustable) |
|||
|
Creep speed |
30-100mm/s (adjustable) |
|||
|
Hold-open time |
0.5-20s (adjustable) |
|||
|
Airproof Force (Max.) |
>70N |
|||
|
Manual Pushing Force |
<100N |
|||
|
Electronic Lock Force |
>800N |
|||
|
Power consumption |
150W |
|||
|
Ambient temperature |
-20+50 C |
|||
Technical Details:
(1) Rubber lining sealing technology combined with V groove on the guide rail enables the door completely sealed when the door closed;
(2)Special door body location technology. Semicircular surface beam on the ground matches with the V style groove at the bottom of door leaf, which stop the door from swing and make sure it moves stable and smooth;
(3) The door body decorated with matte stainless steel or spray surface, and on the middle and both sides with sealing stripes to ensure the hermetic effect.
(4)Feet sensor switch applied to avoid contagion;
Stainless Steel Sliding Door,Stainless Steel Bypass Sliding Door,Stainless Steel Interior Sliding Door,Stainless Steel Folding Sliding Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com