A few days ago, a woman in Xiamen, Fujian Province was injured by the explosion of a chair lift, which caused people to pay attention to the safety of the chair lift. Especially office workers, almost every day touch the chair lift. In daily life, the use of chair lifts is high in public places such as homes and restaurants.
It is understood that since 2007, Zhejiang, Jiangxi, Shandong and other places have repeatedly had several chair lift accidents. In the end, what kind of chair lift may explode? What should consumers pay attention to when buying? The low-end chairs are mostly "three no" products.
Yesterday, the reporter visited some of the furniture market in Chengdu and the second-hand furniture recycling point. They all saw that there are lift chairs for sale, and the cheap one is about 100 yuan, and the expensive one is thousands of yuan. In a junk recycling shop in Chengdong, a lifting swivel chair with backrests and armrests costs only 60 yuan. The owner said the chair was brand new, but the reporter could not find any factory name, address and contact number on the chair.
In the office furniture store of a large furniture mall, a salesperson said that each of the chair lifts they sell is equipped with a product information card, which indicates the product number, production location, sales price, etc. Instructions, warranty cards, etc. When asked if these chair lifts are safe, the sales staff said, "Our goods are regular products produced by our own factories, and they will undergo heavy crushing experiments and assessments before leaving the factory."
Subsequently, the reporter randomly interviewed three dealers selling office furniture, talking about the explosion of the lift seat, they speculated that there may be more gas cylinder gas, but to ensure that the chair sold by the family is strictly quality control, There will be no security problems, and you don't have to "talk about the color change." In this regard, the staff of the Supervision Bureau of the Provincial Quality Supervision Bureau said that even so, in order to ensure the rights and interests of consumers, the chair lift dealers can sign a legally binding agreement or contract with the manufacturer when ordering the chair lift in large quantities. Chair pneumatic rod qualified standard. Consumers should not be greedy for cheap, should go to the regular business to buy, and must purchase an invoice when purchasing, in order to protect rights in the future.
Do not repeatedly lift and disassemble
“I never thought that the chair would explode.†When asked if they knew that there was a safety hazard in the lift chair pneumatic pole, most consumers said they didn’t know it. When they bought it, they paid more attention to the price and style. In the end, what kind of chair lift may explode? How do people buy safe and comfortable chair lifts when purchasing? How to avoid such incidents when using?
Chen Xinghua, a maintenance personnel of a brand of rotary chair lifts, said that the lifting devices currently used in the chair lifts in the market are mainly divided into three types: hydraulic pressure, mechanical type and air pressure. In the low-end chair lift, the air pressure type is mostly used. The pneumatic chair has a very important accessory, the air pressure bar. According to his analysis, the cause of the explosion of the chair lift is likely to be a poor quality gas pressure rod. When the human body sits, the pressure increases instantaneously, or the force is too strong, and the pressure gas is washed out, causing damage to the human body.
In addition, some small workshops in order to save costs, in the production and assembly, the filling nitrogen is not pure enough or filled with other gases, does not rule out the possibility of explosion. Professionals remind consumers that when the chair is in use, it is best not to repeatedly lift and squat frequently. If the chair is cracked, loose or shaken, do not disassemble it yourself. Always seek professional repair or replacement to avoid accidents.
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Why does the air lift chair explode?
According to experts, the gas pressure rod is sealed, and there are many sealing rings inside. The filling gas can ensure its normal operation as long as there is one or two standard atmospheric pressures. If the quality of the air pressure bar is not good, the people sitting on it will be together, the sealing device will crack in an instant, and the rod may rush out. The strong air pressure inside may explode at any time. In addition, some foreign matter in the gas pressure bar will cause harm to the human body under the action of gas. The chair in this incident is probably because the upper end cap of the cylinder is not strong enough. When the compression rod is pushed to the bottom by the pressure, the gas exerts force on it, and the force exceeds the limit that the end cap can withstand. The end cap is broken and the cylinder explodes.
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