阿里巴巴
Types of ladder(Hits:) 
Origin Author Add Time2016-05-10
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Many types and forms of the ladder. Material also has a variety of bamboo, wood, steel and aluminum ladder system. Its structural configuration have national standards. Therefore, in the production or acquisition to comply with national requirements:
(1) any climbing equipment, its structure is configured to be solid and reliable. For workers up and down the pedal, using the load should not exceed 1100N. This is a man dressed weight 7 5 ON 1 safety factor multiplied by the load. 5 dependent. When the treads have a special job, the pressure on the pedal load weight may exceed the above value, the actual situation should be checking on the ladder pedal. If you are not suitable for use, to be replaced or to be reinforced in order to ensure safety. Up and down any ladder, all facing toward the ladder, holding hands is not allowed with no artifacts.
(2) Portable ladders are many kinds of frequency of use are more frequent, often readily borrowed, without scrutinized. Thus, in addition to the new ladder before use shall be conducted in accordance with existing national quality inspection standards, we need regular inspection and maintenance.
(3) foot ladder to a solid unit, and to take plus dressing or nail or anchoring rubber or folder in prison and other anti-skid measures to prevent the dumping of pummeling. Ladders are not allowed to use the booster to prevent uneven subsidence or loose foot of the ladder between the pad was after Loaded, dangerous. The upper end of the ladder to add a fixed set of measures. Working angle 75 ° to the vertical ladder with disabilities 5 ° is appropriate, too large dip-slip-prone, dangerous. Pedal up and down the pitch to 300mm is appropriate, can not have missing files.
(4) If you use a ladder to take a long, stability will be reduced. Thus, in addition to taking measures to secure even a solid connection point, the provisions allowing only take a long time, which allowed three or more ladders to be connected. Bonding strength after ladder beam can not be lower than the strength of the single beam staircase staircase.
(5) the use of the ladder when the demolition, pointed to the upper portion of 35 ° ~ 45 ° is appropriate. The hinge must be strong, and to set a reliable pull support measures.
(6) Fixed straight ladder usually made of a metal material. When using steel production, to be used Q235A · F. Ladder width should not dry 500mm, support should be not less than L70mm X 6mm of angles, they are required to laying and welding firm. Both top rung of the ladder and climb to the top should be flush, and the need to add set 1m-1.5m high handrails to prepare for temporary help pull. Such as using a straight ladder climbing work carried out, climbing to a height that is 5M high places are limited over 2m should be added provided security ring. 8M height of more than two jobs, you need to set up the platform in the middle of the staircase to prepare receded purposes.
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