Safety ladder characteristic:
1. Convenient installation: directly masonry through product embedded installation wall ， location Accurate and firm, very convenient for construction.
2. Long service life: basically 50 years underground and 20 years above ground.
3. Not conductive, because some electric wells have power cable Or other things that may conduct electricity, when the maintenance workers are working up and down, if there is a leakage place or situation, they can safely go up and down without danger.
4. Good chemical properties: corrosion resistance, acid and alkali resistance, suitable for use in humid, salt fog, acid and weak alkali environments.
5. Fire resistance and high temperature resistance. For example, most of the safety ladders currently used are plastic steel ladders, which should meet the requirements of fire resistance and high temperature resistance.
Precautions for safety ladder
1. Ladder Bracket It must be erected in coordination with the construction progress, and the height of one erection shall not exceed the height of one floor above the adjacent wall pieces.
2. The levelness and perpendicularity of ladder support shall be checked for each layer.
3、 Handrail . The erection of diagonal tie rod shall be carried out simultaneously with the erection of vertical pole, and it is strictly prohibited to delay the erection.
4. When the ladder support is one layer higher than the adjacent wall, ensure that Scaffolding Stable temporary tying measures.
5、 Connector Anchorage Bolt For products with product quality certificate, appearance quality inspection shall be carried out before use.
6. The ladder is only used for construction personnel to pass, and it is strictly prohibited for operators to carry materials and construction equipment.
7. The extension height of the ladder is 99 meters (33 sections). In order to ensure safety, the weight of 70Kg per person is taken as the parameter, and the carrying capacity of * * 5 more people when the height is 90 meters, * * 7 more people when the height is 50 meters, and * * 10 more people when the height is below 30 meters is the safety limit stairs At the same time * * can bear more than 3 weights.
8. When heightening the ladder, the wall shall be attached reasonably according to the actual height. If the corresponding attachment is not made, the installation cannot continue upward. The attachment shall be made every 3-6 meters. (The attached wall fasteners should be set horizontally. If they cannot be set horizontally, one end of the connecting ladder body should be lower than the end connected to the main structure of the building, and the slope of the wall fasteners should be less than 1:3). And the attachment should be strengthened above 30 meters; An adhesion must be made every 3 meters to ensure firm adhesion.
Scope of application:
Widely used in building construction, bridges, overpasses, tunnels, culverts, chimneys water tower , dam and large-span scaffolding and other projects.
