Sectional Door Accessories: motor 220V-380V, control box, spring break device, cable break device , aluminum alloy rope pulley, enhanced shaft bracket, air bag system, duplex enhanced guide wheel bracket.
Detail introduction for above main accessories
1.Motor and controller:
The garage door operator is designed for residential overhead sectional and tilt doors.
The operator memorizes the limit positions and unique braking system that slows the unit down at the end of its travel.
Rolling code remote control with max. 20 pcs hand transmitters.
The operator is equipped with a manual release lever which allows manual operation of the door in case of power failure.
The controller has a security LOCK function which prevents operation of the door from transmitter.
2.spring break device:
Sectional doors are hinged and they bend in the tracks as the door opens and closes. Many of these doors are counterbalanced with extension springs, also designated "stretch springs," and they have seven characteristics. The length is the measurement of all the coils pressed together. This, along with the inside diameter of the coils and wire size - the thickness of the wire from which the springs are made - determine the stretch, the distance the spring is extended - normally half the door height, and pull, the force the spring pulls when stretched its normal length. The type of ends determine how the ends of the spring are mounted. The initial tension is the percentage of pull needed to separate the coils. This is determined by the pitch with which the springs are wound. On sectional garage door springs this is normally 15 percent. For example a 100 pound pull spring requires 15 pounds of weight to separate the coils; when a door is open the two springs will support 15 pounds of door weight without any stretch.
Most extension springs are made of oil tempered wire. These are normally coated or painted. Some springs are made of galvanized wire.
3.able break device:
cable break device ,door hardware
adjustable bottom bracket .
the raw material hot plate
zinc plated
safety device
adjustable bottom bracket
the raw material hot plate
zinc plating
spring safety device ,2" and 3" safety device
once the cable is broken ,this devoice can keep the hurt away from the door falling
4.aluminum alloy rope pulley
Equipment: CNC stamping/punching machine, CNC bending machine, CNC cutting
machine, 5~250 tons punching machines, welding machine, polish machines...
Processed material: stainless steel: copper, carbon steel
Surface treatment: Hot galvanized, polishing
Making process:Stamping, deep drawing,bending, punching, laser cutting,threading,
welding, tapping, riveting, grinding
5.air bag system
It is a safety device. When the door is down to hit something, it will up automatically.
Operation pressure:<3mbar
Battery:CR2032*2
Battery lifetime>1 year
Emission frequency: 315MHZ
Emission power:<10mW
Receiver power source:12V
6.duplex enhanced guide wheel bracket
Determining the right type of sectional door roller for your garage door tracks can be a little confusing, especially when you do not know what you need to look for in a garage door roller. To simplify things, there are two primary things you need to be aware of. First are the actual dimensions of the roller, and second is purpose that you will be using the door for. You can read below about measuring your roller and choosing the right quality of material for your door.
Other Door Accessories,Electronic Door Accessories,Automatic Door Accessories,High Speed Door Radar Detector Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com
The China-ASEAN Free Trade Area has become a force to drive furniture exports. On January 1, 2010, according to the “China-ASEAN Framework Agreement on Comprehensive Economic Cooperation†time frame, the China-ASEAN Free Trade Area was fully launched, marking China and 10 ASEAN countries. The region that consists of nearly 6 trillion U.S. dollars worth of gross national product and 4.5 trillion U.S. dollars of trade volume has begun to enter the zero-tariff era.
The zero-tariff preferences of the “China-ASEAN Free Trade Area†and a series of convenient policies provided by the free trade zone have greatly reduced the export costs of furniture in China; at the same time, due to its convenient maritime conditions and restrictions on the trade of exported furniture products. Less, it has become a force that has driven China's exports to grow substantially.
The economy of major countries such as the United States and Europe recovered steadily, and the US real estate market slowly recovered. In 2010, the economies of major economies such as Europe and the United States recovered steadily, and the demand for residents rebounded, driving China’s exports to maintain rapid growth. According to data released by the American Institute for Supply Management (ISM) on January 3, 2011, the US ISM Manufacturing Purchasing Managers Index (PMI) was 57 in December, up from 56.6 in November, and the growth rate has risen since May 2010. New heights; According to data from the US Department of Commerce, in November, new housing starts in the United States were calculated at an annual rate of 555,000 units, an increase of 3.9% from the revised data in October; the US second-hand housing sales continued in November Slow recovery momentum, sales volume growth of 5.6%, higher than market expectations.
At the same time, according to data from the European Commission, due to the strong growth in the economies of Germany and France, the Eurozone’s manufacturing Purchasing Managers’ Index (PMI) expanded for the fourth consecutive month in December and rose to 57.1, continuing for the 15th consecutive month. 50 above the divide line.
Two major reasons to promote the rapid growth of China's furniture exports
Last year, China’s furniture exports accounted for US$32.99 billion, an increase of 30.3% over the previous year (the same below), showing that private companies’ export share ranks first, and the growth rate is leading; exports are mainly based on general trade; they are mainly exported to the United States, the European Union and the Association of Southeast Asian Nations, among which ASEAN’s exports have increased significantly; December’s exports have reached record highs; Guangdong and Zhejiang are the five major export provinces and cities. Mainly affected by the following two major reasons.