The reporter learned from the Shijiazhuang Construction Bureau that in order to further strengthen the prevention and control of atmospheric pollution, Shijiazhuang City has intensified the dust management of the construction site of the construction project, requiring that the trunk road in the urban area be blocked not less than 3 meters, and other road sections should be no less than 2.5 meters. The specification of the dense meshes on the outside of the main body of the project was standardized.
According to the regulations, the construction site shall be subject to closed-end management. The material of the enclosure shall be brickwork or special metal forming materials to ensure the safety, stability, cleanliness and beauty of the enclosure. It is forbidden to construct the enclosure strictly or openly. Fence height: urban trunk road is not less than 3 meters, other sections are not less than 2.5 meters; plastering inside and outside the brick wall, gray paint from top to bottom (with gray glazed tile color), middle white, gray glazed roof; metal material Surrounding walls must achieve uniform standards. The net width of the gate should not be less than 6 meters, and the net height must not be less than 4 meters. The company should have the company logo and the project name at the door head. The post should have safe production, civilized construction, and excellent content. The door should have a light box or neon light, and the night To light.
Shall be used outside the main building works compliant Dense mesh safety net is closed, dense mesh safety net should be kept neat, solid, no damage. Prevent spillage of materials, construction waste, and dregs during construction, and avoid dust, waste, and debris from escaping.
The relevant person in charge of the Safety Supervision Station of the Municipal Construction Bureau stated that at present, law enforcement personnel are inspecting projects under construction in the city, and projects that do not meet the requirements will be rectified immediately.
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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.highspeedshutterdoor.com