Chair LiftIs a new type ofchair, now basically the office is to use thischairSon, because of their own principles and materials of the relationship, so there is a certain risk. But because the elevator itself has a lot of advantages, so it is still very popular, to understand some of the information on the explosion of the chair, the daily life of our daily is also very helpful.
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first to a simple understanding ofLift chair will explodeThis problem. I believe that in real life, we have rarely seen the lifting of the lifting chair case, with the progress of science and technology, and now the lifting of the manufacturing process is quite perfect, so it is not the case of explosion. But if it is some of the poor quality of the product there may be hidden in this area. Now on the market more common lift chairs divided into categories? From the literal interpretation, the lift chair is the seat height can lift the chair, generally divided into pneumatic, hydraulic and mechanical. At present, the pneumatic lifting chair has a high share in the market. The adjustable function of the pneumatic lifting chair is realized through the air spring part.
1 then how to achieve the pressure of the lift chair height adjustment function? Gas spring is a kind of gas and liquid as the working medium can support, buffer, brake, height adjustment and angle regulation function of the elastic element, by the pressure tube, a piston, a piston rod, and a plurality of connection component. The working principle of the pneumatic type lifting chair is to press an inert gas in a closed cavity, such as nitrogen, to make the pressure in the chamber greater than the atmospheric pressure, and the movement of the piston rod can be realized by using the pressure difference.chairThe role of.
2 hydraulic lift chairs are used for special occasions, such as barber chairs, the use of the third users need to exert the driving force to achieve the lifting function of the chair. Hydraulic lifting mechanism that is the principle of hydraulic jack. Because of the high cost, the structure is relatively complex, and the height adjustment is not sensitive, the market share in the domestic market is relatively low.
3, in addition to the pneumatic lifting chair, there is also a mechanical lift chair, that is, to support the seat of a solid steel bar, when theComputer chairNeed to adjust the height, then make the chair down, will loosen the screw fixing bolt after adjustment after the screw on the screw.
4 compared with the mechanical lifting chair, pneumatic lift chair production cost is low, easy to use, so the market share is relatively large. However, the safety of pneumatic lifting chair is not as good as mechanical. In recent years, the explosion accident of the lift chair in our country is the air pressure type lift chair.
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the most important thing to prevent the explosion of the chair is to be careful when buying. Buy a quality certification and safety certification of the brand, the state in fact, these products with security risks are relatively strict monitoring, so when the purchase can not be cheap. So how much is the explosive power of the lift chair?
& nbsp; 1. According to the calculation, under normal circumstances, when the chair of the pressure rod bears the weight of a person, the air pressure rod will be compressed when the air pressure inside will reach 24 about atmospheric pressure, once the explosion occurred, the area of the bottom of the piston in the 24 atmospheric pressure multiplied by the tubing, is an air pressure rod to instantly broke out of power. This force will reach about 70 to 80 kg.
2 experiments, the atmosphere is compressed to about 7 atmospheric pressure, the air pressure instantly released, the top of the piston in the top bar, and the top bar is placed in front of a density board, to simulate the surface of the chair. The results, about three or four mm thick density board is easily breakdown. In the second set of experiments, they increased the thickness of the density board, placed two density board, the results of these two density plate also can not withstand the impact of 7 pressure. Experiments show that the power of the 24 pressure generated at least able to breakdown 6 density board, amazing power. It is because of the strong pressure that has produced such a huge damage.
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prevent lifting chair explosion in addition to the purchase, in the use of the time should also pay attention to a few points. General in the rise and fall of the chair lift not repeated; if not very professional, myself not to remove the chair lift, also don't let lifting chair placed in the vicinity of something too hot; the use of a period of time can let professionals to check, timely repair replacement, especially if you for regular maintenance of office equipment in the company. So what can cause the explosion of the pneumatic lift? Generally speaking, the following two conditions: first, the explosion may cause the gas spring wall is uneven or preload is too large. Second, frequent high and low regulation and rotation, resulting in overheating explosion.
1 under normal circumstances, the bicycle inflator and the air pressure rod is similar in high purity inert gas nitrogen. When people sit on the chair, although nitrogen pressure increases, but still in the limit of the pressure expansion, there will be no problem. And some of the poor quality of the air pressure rod, there is often insufficient purity of nitrogen, gas bar material shoddy, in the summer heat or frequent seat lift, pressure rod pressure swells, easily caused the explosion. Some black manufacturers to lower costs, with free high-pressure air instead of inert gas, which is more likely to cause the pressure bar explosion.
2 in addition, a number of consumers in the use of pneumatic lift error when there are security risks, such as sitting too hard, or often adjust the lifthandleEtc..
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selection of safety lifting chair should pay attention to what?
1, to buy the regular manufacturers of products, consumers in the purchase of this kind of pneumatic lifting chair, be sure to choose the formal product manufacturers information. Do not covet cheap to buy three products, otherwise not only can not guarantee the quality, may also no rights when problems arisedoor. Purchase, consumers should pay attention to see whether the product has a certificate, a registered trademark, manufacturer name and address, etc..
& nbsp; 2, not too cheap chair lift, according to insiders, any formal manufacturers to sell the chair lift, issued by a & ldquo; inspection report & rdquo; for a pneumatic lifting chair has certain danger coefficient of pressure rod, the steelMaterial ScienceAnd high purity gas manufacturing, and the gas tight seal; in the upper end of the pressure rod, but also printed the logo make the verification by the relevant departments of the state, and use English to write on the manufacturer, pressure bar type and prompt. Usually there will be an explosion, and the use of the lift chair is no regular production factory production of poor gas.
3, in the purchase of the lifting of the chair when you can view the chair or on the packaging of the products are qualified to identify and comply with the basis. Since the general pressure lift chairs have warranty period, consumers buy, remember to ask the merchant for invoices, so as to avoid lack of credentials rights.
4, you can try to adjust the purchase of the seat, to see whether smooth, recommended to buy and adjust the smooth lift chair. In a pageLift chair explosionThe information is simple to say some, I hope you understand the relevant information to help, small make up the information is limited, only for your reference.
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