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In order to better solve the elevator noise, we choose the "compromise" solution
Read: 305 Author: Mr. elevator source: Elevator noise control release time:2020-01-08

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This is the fifth part of "I speak for Shenzhen and Japan" series, and "I speak for Shenzhen and Japan" is a story told by Shenzhen and Japan cooperative customers. Welcome to Shenzhen and Japan for contributions.

Mr. Chen's family lives in Hangzhou, and his residence is a compound house on the top floor of the community. Since the delivery of the new house at the end of 2014, serious elevator noise interference has been found. In Mr. Chen's own words, "as long as the elevator starts to run, the whole house is like following the" earthquake ", which is not exaggerated at all.". Young Mr. Chen loves studying very much. In order to solve the elevator noise, he has done a lot of research and efforts (he made a professional sound insulation wall in the room at his own expense, and persuaded the property to install sound insulation cotton in the elevator room), but the noise reduction effect is not ideal.

"The interference of elevator noise to life has become a heart disease for me." Mr. Chen said, "I am a weekend sleepy person, but every morning I wake up from my dream with the annoying elevator noise. I used to want to smash this broken elevator when I was impulsive."

In order to solve the elevator noise, Mr. Chen has become the representative of the owners of elevator noise protection in the community - the group leader of elevator noise reduction. Mr. Chen, through expert consultation, self-study acoustic principles and building regulations, at his own expense entrusted a third party to detect noise, and by using his own expertise and ability, persuaded the developers to agree to choose Shenzhen and Japan company to carry out elevator noise reduction treatment in the community according to the demands of the owners. The most difficult thing is that Mr. Chen also persuaded the owners of the community to adopt the "compromise" plan, which insisted on half of the noise reduction cost, accelerated the implementation of the elevator noise reduction management, and avoided the development company to choose the low-cost bad noise reduction management.

"It has been more than two years since the elevator noise reduction. The effect of the elevator noise reduction is very good. I don't have to endure the annoying noise interference of the elevator anymore." Mr. Chen said, "compared with many people, spending a lot of time to complain about rights protection, I personally think it's worth spending a little money in exchange for noise reduction management time (speed), in exchange for more reliable elevator noise reduction quality." The following is the elevator noise reduction experience described by Mr. Chen:

Elevator noise found after check-in

The property manager said I was too sensitive

Remember that was the end of 2014, the day after the new house was delivered. I'm measuring the size in the room alone. It's a little late. I'm going to have a rest. I didn't expect to hear the elevator "crash" suddenly, and then the "whine" continued. At last, when the elevator stopped running, "click" and then quiet down. I was shocked at that time. I thought that the decoration of the next door had not been stopped, but after repeated confirmation, I found that the huge noise I just heard came from the elevator. Every time the elevator starts, the "buzz" will continue to sound, and I suddenly collapse. I didn't pay attention to this serious problem when I was busy and immersed in joy. What should I do now?


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On the first day of decoration, I complained about elevator noise to the property company. At that time, I naively thought that I bought a house built by a famous large state-owned enterprise. The elevator noise problem should be paid attention to and solved soon. However, the property management company put the responsibility on the elevator company after a simple look; the elevator company is more responsible, and soon arranged technicians to do the inspection, but the inspection result is that the elevator is OK and completely qualified. We once again put our hope on the property, but the property said: "the elevator companies have come to check, the elevator is qualified, are you too sensitive to the sound?" I almost had doubts about my hearing. However, the fact is that the elevator noise is not only heard by me, but also reflected by other family members. Even many friends who have been to my home say that the elevator noise is too loud to accept. However, the property has always insisted that the elevator noise is qualified, so we dragged for more than half a year.

Noise control of self paid elevator

But it is regarded as "sound insulation of wall"

When I was struggling with my relatives and friends because of the elevator noise, a knowledgeable friend said to me, "it's not easy. You can make a sound proof wall, which is what all KTVs in entertainment venues do." I think it's true

It makes sense that KTV noise is much more than elevator noise. Since KTV can do sound insulation well, my family should not be a problem. If I can solve the problem by making a sound insulation wall in my home, then I don't have to go to the property to complain every day.


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I invited professional sound insulation masters to buy high-quality sound insulation board, sound-absorbing cotton and vibration damping keel. We have increased the sound insulation wall with a thickness of nearly 120mm according to the professional sound insulation wall technology for the indoor wall surface shared with the elevator shaft. During the construction, the master said: "the quality of the sound insulation board and the sound insulation cotton you used is very good, and the noise reduction effect will certainly be good."

However, what I didn't expect was that after the professional sound insulation wall which cost tens of thousands of yuan was completed, the elevator noise did not get a better improvement. When the elevator is running, the "buzzing" sound is still full of every room, even the room farthest from the elevator can be heard.

Elevator noise reduction property does not understand

Spend 20 thousand to do no work again

Seeing that the new house is about to be renovated, we can move in soon, but the elevator noise has not been solved. I began to worry, and constantly complained to property and real estate companies, asking them to solve as soon as possible. The number of times to go, the property company was annoyed, and finally accepted my appeal - "adding a layer of wall sound insulation inside the elevator machine room".

After the property submitted to the real estate company for approval, a noise reduction construction team was entrusted to increase the wall sound absorption of the elevator machine room. For the fear of construction technology, I have been watching during the construction period, especially let them pay attention to the joint and fixing technology. The soundproof cotton must be paved firmly, and there must be no falling. "The company spent more than 20000 yuan on noise reduction, and there should be no problem with elevator noise," the property said I am also full of expectations.

A few days later, the soundproof cotton was installed and we couldn't wait to test it. However, when the elevator is running, the "buzzing" sound still clearly exists in my home, only the elevator holding brake sound is reduced a little.


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What's wrong with this? I wonder that the sound insulation wall has been built in my house and in the elevator machine room, but the effect is not obvious. "Mr. Chen, don't be too sensitive. We have tried our best to meet your requirements," the property manager said But I can only break my teeth and blood swallowing. I have to work hard

In the past one year, I have spent money on making sound insulation walls. Elevator companies and property companies have also actively cooperated in their efforts. However, the effect of noise reduction is still unsatisfactory. Why is this the bottom?

Convince yourself that there is a "break in period" for elevators

After check-in, you will gradually adapt

I don't know whether the property management company and elevator company are really ignorant or comfort me out of kindness. Anyway, they are very confident to say to me: "elevator is a kind of transportation tool, like a car, it's normal to make a lot of noise during the running in period. When the running in period is over, the elevator will gradually straighten out, and the voice will gradually become smaller." (I didn't know it was their nonsense until I learned about elevator noise.)

All kinds of furniture have been prepared in the new house. The view of the penthouse is much wider than that of the old house, because the elevator noise is not really a problem. So I also try to convince myself that when I first came to Hangzhou, the place where I lived was very noisy, and I was not used to it later? It's estimated that we'll get used to it later. So, at the end of 2015, we moved into the community.

During the period when I just checked in, there were not many people in the community (the frequency of elevator start is low). At the same time, due to the busy work, I did not pay special attention to the elevator noise for a period of time, and I naively thought that the elevator noise might slowly decrease.

Elevator noise is a heart disease

Children's crying affects my nerves

What I didn't expect is that with the increase of the number of households and the increase of the frequency of using the elevator, the noise of the elevator is not only less and less, but more and more prominent. I just found that the elevator noise is still very annoying. It's not something you can bear, adapt or get used to.

Modern urbanites are usually very busy at work. Because I am tired at work, I always want to sleep in on weekends. But every weekend, I always wake up from my sleep by the annoying elevator noise. I really want to smash the broken elevator when I am impulsive.


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Of course, I sometimes ignore the elevator noise when I am busy. But the interference of elevator noise to our life has become a heart disease that we can't get rid of. Especially when we know that the elevator noise belongs to low-frequency vibration noise, which will have a serious impact on children and the elderly, I often worry that my family will be hurt. Especially my child is very small. Sometimes when the elevator runs, he will cry more than once. Every cry affects my nerves. Weak as he, why suffer so much?

We are not the only one to complain about the noise

I became the leader of elevator noise reduction

In order to solve the elevator noise, I searched and studied a lot of data related to elevator noise reduction, and consulted experts in the field of building noise reduction. During this period, I found Mr. elevator of Shenzhen Japan elevator noise control research center and conducted in-depth communication. Finally, we know that the reason why the noise reduction effect of the elevator we have done is not good is that the "wrong medicine" - the direction chosen by the governance is wrong. In fact, the elevator noise is mainly caused by the common wall design of the building, which belongs to low-frequency noise and is transmitted through the wall structure.

On a sleepless night deeply disturbed by elevator noise, I sent my "anguish and opinions on elevator noise" to the wechat group of community owners. Unexpectedly, many owners came to me and told me about the elevator noise in their home. It turns out that I am not the only one who complains about elevator noise. There is elevator noise in the top duplex of our whole community.



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Elevator noise is a heart disease

Children's crying affects my nerves

What I didn't expect is that with the increase of the number of households and the increase of the frequency of using the elevator, the noise of the elevator is not only less and less, but more and more prominent. I just found that the elevator noise is still very annoying. It's not something you can bear, adapt or get used to.

Modern urbanites are usually very busy at work. Because I am tired at work, I always want to sleep in on weekends. But every weekend, I always wake up from my sleep by the annoying elevator noise. I really want to smash the broken elevator when I am impulsive.

Elevator noise at home. It turns out that I am not the only one who complains about elevator noise. There is elevator noise in the top duplex of our whole community.

When I talked about the pain caused by elevator noise, they all said they felt the same way. Everyone was excited, just like they finally found an organization. So a small wechat group about "elevator noise reduction" was established immediately, and I was honored to be the group leader of the elevator noise reduction group in the community.

Entrusted third party inspection and appraisal

Only then did we know that the elevator noise exceeded the standard seriously

As a group leader, I felt very responsible, and gradually began to take solving elevator noise as the most important thing to deal with. After the painful experience, I continue to learn the knowledge of elevator noise acoustics, relevant laws and regulations, consult with building experts, analyze and research countermeasures. In a study, I found that according to the current building regulations, elevators should not be designed adjacent to bedrooms. It is obvious that our community has violated this sound insulation provision in design. If we get the treasure, we will communicate with the development company about this article, but they think that although there are some small problems in the design, they have taken noise reduction remedial measures for the elevator machine room, so there is no problem at present.


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As for this explanation, we have no choice but to entrust a third-party company to detect the indoor noise, and then further coordinate and solve it. During the inspection, we have been worried about what to do if the noise does not exceed the standard? Are we going to put up with it? Still want to make some noise when checking elevator noise, want to make decibel bigger? However, unexpectedly, after the third party inspection report came out, the noise in my bedroom at night was as high as 43-46 decibels (when the elevator stopped, the indoor background noise was only 26.5 decibels).

Acoustic experts told me that when the noise of the bedroom elevator exceeds 35 decibels at night, most people will feel restless. When the noise of the elevator exceeds 40 decibels, it should be defined as serious. Yes, according to the appraisal report, the elevator noise in my house has exceeded the standard seriously, but we have endured it silently for nearly a year.

Elevator noise reduction talks

The game among the cost, effect and scheme selection of noise reduction

When we take the report that the elevator noise exceeds the standard and find the development company to report the elevator noise problem again, the development company has to start to take it seriously. Different from many owners who are bothered by elevator noise to protest and complain, during the negotiation, I kept telling them the facts and reasoning, and expressed to them the determination to deal with the problem of elevator noise reduction. At the same time, I gave full affirmation to the work done by the relevant personnel of the real estate company, rather than the confrontation between slapping the table and scolding. They said, we are very rational, so we made a special report to the company on elevator noise.

Under our questioning, the development company finally began to seek solutions. In addition to the Shenzhen and Japan companies recommended by us, developers have also found many companies to propose solutions for elevator noise reduction. Due to the failure experience of noise reduction in the early stage, we pay special attention to the elevator noise reduction plan, and require the development company to let us also participate in the decision of noise reduction plan. After searching the Internet, I found that there are thousands of ways to reduce the noise of elevator, but there are not many ways to ensure the effect. There are various companies involved in elevator noise reduction, including noise materials, noise barrier and noise reduction technology for high-speed companies, vibration dampers, water pumps and transformers. But the elevator is a special equipment, the field of elevator noise reduction is quite professional, should not be done by non professional companies.


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In order to solve the dispute of different opinions on elevator noise reduction, the development company has organized many parties including the owner, property company, real estate customer service department, real estate engineering department, real estate design department, elevator company, etc

Communication and consultation meeting. The final result of communication is to solve the disputes from the following directions: Elevator belongs to special equipment, and whether the elevator noise reduction scheme can meet the requirements of safe operation and annual inspection in the future; in many elevator noise reduction schemes, the price is very different, so the noise reduction effect of the scheme we want to choose must be guaranteed, not because of the price reduction; we must inspect the noise reduction treatment Management's strength, successful cases and governance experience.

The multi-party talks were very successful. After technical investigation, only three elevator noise reduction companies met the requirements, so we jointly participated in the final technical interview. This is a game about the cost of noise reduction and the choice of noise reduction effect. After the interview, especially after answering all kinds of technical questions raised by the development company and the owner, we have come to the obvious conclusion that Shenzhen Japan company is the best choice. The participants of the development company acknowledged that only the noise reduction treatment plan of Shenzhen and Japan company can meet the requirements of elevator installation and ensure the safe operation of the elevator, and it is the only noise reduction treatment company that promises "no cost for no governance effect". In addition, shenri company is also the Enlightenment of elevator noise reduction industry. It has been studied in the field of elevator noise reduction for nearly ten years. Noise reduction products have been applied in most cities in the country, and the technology and products are more mature and reliable. At the same time, some owners have also inspected the engineering cases of Shenzhen and Japan company in Hangzhou, and the governance effect is very good, which is highly recognized by the owners.

To better solve elevator noise

We choose the "compromise" plan

Once again, we waited with great expectation for the developer to make the final decision, but the result was unexpected. When the real estate project engineers submit the scheme review to the group headquarters of the real estate company, the headquarters is responsible for unexpectedly requiring the project to adopt the scheme of a Hangzhou local company, because the cost of noise reduction governance exceeds the budget, and the local company has more guarantee for after-sales service.

This is the only time that I can't help but want to get angry in the process of noise reduction and management coordination - "his grandmother's, whether the effect of noise reduction and management is good or not is our core pursuit. If the effect of noise reduction and management is not good, how about after-sales service?"

There is no harm if there is no comparison. In terms of noise reduction price, the unit price of Shenzhen Japan company is only 3000 yuan / set lower than that of local Hangzhou company; however, in terms of noise reduction effect commitment, Hangzhou company only promises to reduce to less than 35 decibels, while Shenzhen Japan company promises to reduce to less than 30 decibels and return to the owner for satisfaction.


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Although we expressed strong dissatisfaction, but due to the approval of the real estate group, the elevator noise reduction plan has not progressed. Confrontation is certainly not the solution. To solve the problem, we need the right method. Our purpose is only to solve the problem, so let's step back and expand the world. What we need is to fundamentally solve the problem of elevator noise. Therefore, I propose to all the owners that our owners should pay half of the cost of noise reduction, but require the developers to adopt the elevator noise reduction scheme of Shenzhen Japan company. The proposal soon won the approval of most owners of the community, because in the past year, we have been fed up with it. If the effect of noise reduction is not good, we must continue to bear it, which is contrary to our original intention.

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"Compromise" is an attitude and an expression of anger, but I believe that we can quickly promote elevator noise reduction through "compromise" and achieve the best elevator noise reduction effect guarantee. After we passed the determination and decision to the customer service of the residential real estate, we got a reply soon, and the development company had no reason to delay any more. The contract for noise reduction treatment of elevators was signed soon. The first batch of us only implemented noise reduction treatment for more than 10 owners who agreed to bear the cost of noise reduction of elevators. After the latter owners saw the effect of noise reduction treatment in the early stage, they all joined the team for noise reduction in accordance with the scheme in the early stage. Today, most of the residential elevator noise has been solved.

Spend a little money in exchange for the guarantee and time of noise reduction effect

I think it's worth it

Looking back on this experience of elevator noise reduction, I think that "research, rationality and compromise" is the key to promote the implementation of this elevator noise reduction management. Facts have proved that this choice is correct. The problem of elevator noise reduction has been dealt with quickly. I also gave myself and my family a quiet living environment.

Elevator noise belongs to low frequency vibration noise, which not only affects our sleep, but also affects our mental health. So I think it is very worthwhile to spend a little money in exchange for the effect guarantee and time (speed) of elevator noise reduction. Every weekend later, I can relax and sleep in, without any more pain, this

I was more convinced that the decision I made was right. Seeing that many people in the community have solved the elevator noise due to my efforts, I am also very pleased.

Because of the elevator noise, I know and understand Shenzhen and Japan company, and also joined the wechat group of Shenzhen and Japan. Whenever I see the case of the owner's endorsement issued by Shenzhen and Japan company, I feel a lot, and also see that it is not easy to reduce the noise of the elevator. Shenzhen and Japan company, for more than ten years, has been focusing on elevator noise reduction, which is very rare. As the beneficiary of Shenzhen and Japan's noise reduction technology, I hope more people who are also trapped can benefit, so I am willing to speak for Shenzhen and Japan's elevator noise reduction technology:

Elevator noise reduction, find Mr. elevator; elevator noise reduction prevention and control, select deep noise reduction management team!


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Last article:Face the choice of elevator noise - or bear it! Either line!
Next article:Suffering from elevator noise for 13 years, I never wanted to give up!
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