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.selfrepairinghighspeeddoor.com
Yuan Zhibin, a researcher in the metallurgical industry at China Investment Advisors, pointed out that for a long time, the development of China's nonferrous metals industry has been an extensive expansion at the expense of resources. With the rising cost of resources and the sudden increase in environmental pressure, the existing development mode of the non-ferrous metals industry is insufficient to support the sustainable development of the industry. In order to effectively enhance the market competitiveness of the non-ferrous metals industry, strict control over the growth of the industry can, on the one hand, slow down the excess production capacity. On the one hand, it can set aside time to absorb the existing surplus and backward production capacity.
According to the data, by 2010, the output of ten non-ferrous metal industries including aluminum, copper, lead and zinc reached 31.35 million tons, an increase of 20.4% over the same period of last year. Output consumption accounts for one-third of the world's total, and the main business income was realized. About 3 trillion yuan, the proportion of GDP increased from 1.19% in 2005 to 1.99%. As the development of the non-ferrous metal industry can contribute to the local economy, local governments often become the driving force for the scale expansion of the non-ferrous metals industry.
From the observation and control of the market of several major metals, the supply and demand of basic metals may not be changed in a large scale in the short term. Although administrative measures are currently the main methods of market regulation, it will take time to test whether they will achieve the corresponding effects. How to control the growth rate of 8% will be the focus of the next phase of administrative regulation. In January-February 2011, some non-ferrous metal prices rose significantly, which is more consistent with the historical experience of rising profits in the non-ferrous metals industry during the inflation period. The future market development will focus on the adjustment of the industry structure, and industry leaders may benefit significantly.
According to the "China Nonferrous Metals Industry Investment Analysis and Prospects Forecast Report 2010-2015" released by the China Investment Advisor, it shows that the current non-ferrous metal industry has the following problems in its development. The self-sufficiency rate of bulk mineral products is getting more and more serious; the industrial concentration is low. The elimination of backward production capacity is arduous; the pollution is serious, and environmental protection has a greater impact on non-ferrous metals companies, but there are still no major breakthroughs in environmental protection problems; international trade protectionism has risen and it is extremely unfavorable for China’s exports.
Annual output growth of non-ferrous metals in the 12th Five-Year Plan will be controlled within 8%
Recently learned that non-ferrous metals will enter the growth period of control, the forthcoming "12th Five-Year Plan" for the non-ferrous metals industry will control the production of ten major metals within the annual growth rate of 8%. During the "11th Five-Year Plan" period, China's non-ferrous metal industry investment grew at an average annual rate of 32.7%, and its main business income increased by 29.4%. China has for many years ranked first in non-ferrous metal production.