Are there limitations to the use of mobile platform ladders


Industry I 2020-09-15, Number of views:10



Mobile platform ladder Fasteners are used to connect parallel or oblique rods. Scissors diagonal rods should be fixed at the intersection with fasteners.  The distance between the center line of the fastener and the main node on the extended end of the horizontal horizontal rod or the vertical rod should not be greater than 150mm. Both ends of the in-line and open double-row scaffolding must be provided with horizontal diagonal braces, and the middle should be every 6  Set a span. The longitudinal lap length is not less than 1 meter, and 3 fasteners are installed at equal intervals. The distance from the edge of the end fastener cover plate to the lap longitudinal horizontal rod end is not less than 100mm.  The two sections of aluminum alloy stretch ladders for mobile platform ladders are connected by a locking device and are combined with two aluminum alloy single ladders that can be raised and lowered, but they cannot be independently supported.


consists of ladder beams, pedals, ladder feet, locking devices, pulleys, ropes, top ladder, bottom  Section ladder and other components.  All the scaffolding erected by industrial and civil buildings shall implement the integrated scaffolding quota.  Single item scaffolding is an item used when scaffolding cannot be calculated and the building area must be erected.  When there are several eaves heights in the same building, the corresponding quotas shall be applied to different eaves heights according to the vertical division, and basement scaffolding quotas shall be applied to the basement (semi-basement).  At present, there are more than 1,000 kinds of aluminum alloys officially registered in the world, and 450 commonly used ones, which are included in the 1xxx to 9xxx series, which have made great contributions to the development of the world economy and the progress of human civilization.


However, with the advancement of science and technology, the modernization of the national economy and national defense industry and the improvement of people’s living standards  Some alloys have been eliminated, and there is an urgent need to develop a batch of high strength, high toughness, high modulus, low expansion and contraction, wear resistance, corrosion resistance, fatigue resistance, high temperature resistance, low temperature resistance, radiation resistance, fire prevention, explosion resistance, easy cutting, easy polishing  , Surface treatment, weldable and ultra-light new alloy.  Such as 6b≥750MPa high-strength and high-toughness alloys, aluminum-lithium alloys with a density less than 2.4, powder metallurgy and composite materials.


Ladders must be maintained during the running-in periodRun-in maintenance is required. When the machine is used within the specified run-in period, it needs to be used in accordance with the corresponding regulations, and the lubrication and tightening conditions should be checked comprehensively, and the conditions of the entire ladder must be observed. If any abnormalities are found, they should be resolved in time. The focus of the run-in maintenance is  Change the lubricating oil, lubricate all parts, tighten all bolts. Perform a secondary maintenance after the running-in period.  If you use it frequently and require good load and stability, then buy a folding ladder.  If used occasionally.  For convenient storage, choose a telescopic ladder.


Nowadays, fishing rod type telescopic ladders are popular on the market, like bamboo joints, they have certain limitations in strength  Sex, if a single section is damaged, the entire ladder is useless.  On the contrary, slight damage to the folding ladder does not delay the use of the ladder.  The design of the stair step size is suitable to pay attention to the slope of the step.  However, the inclination is determined by the height of the story and the size of the space around the opening.  The angle formed by the straight line formed by the front of the stair step and the level is the slope of the stair step.  The slope of the indoor stairs is about 30, and it feels comfortable and safe to walk.