Under what circumstances can an elevator rope break?

With the rapid development of the economy and society, our cursed environment has undergone a great change, in the past, all places were just low-rise small buildings, and now in many cities have built a lot of high-rise buildings to provide housing for human beings, in many areas, the state has clear regulationsAs long as the building is more than the sixth floor, it must be installed with an elevator, many people will ask, under what circumstances will the rope of the elevator break, in fact, this situation is very rare, generally the elevator makes the life longer or man-made reasons.

Now many places have built high-rise buildings, some places have very high floors, there are dozens of floors, there are hundreds of floors, if you don't install an elevator, it is impossible to go up, not only spend a lot of time, but also take physical strength. Anyone who has taken the elevator knows that there is no feeling when going up, and from the first floor to dozens of floors, if there is no one halfway, it generally only takes a few seconds to go up, which greatly saves a lot of time.

In fact, the safety factor of the elevator.

It is still very high, the whole building is upstairs all rely on the maintenance of the elevator, if the design is not good, it will endanger the safety of many people's lives, and it will seriously affect the normal order of people, so businesses must follow higher standards when producing elevators, many of them are to ensure quality and quantity. Although the elevator is convenient and fast, it is not excluded that when the elevator fails, such as sometimes there is a power outage, which seriously affects the normal operation of the elevator.

In fact, the rope of the elevator is rarely broken, unless the elevator has been used for more than its years will be broken, we all know that the general use of things for a long time is very fragile, and it is also easy to fail, so we must pay attention to the production date to ensure the safety of everyone's life. There is also someone who deliberately broke it, otherwise the rope of the elevator will not break, which is put on the market after a lot of testing.

The rope of the elevator will generally not break, but it will break when it is pulled by more weight than the rope itself can bear, and the aging of the elevator rope will also cause the elevator rope to break.

Under normal circumstances, it is a sudden break, which may be a black spot, and then with the use of the elevator, it will exceed a range of use, and it will break completely suddenly.

If the wire rope is used in an oil-free state for a long time, the unlubricated wire rope will seriously affect the life of the wire rope and the traction pulley. But in fact, even if the rope of the elevator is broken, the person sitting in the elevator will not have an accident, and the elevator itself has other brakes.

Summary. The elevator rope breaker switch is protected on the bottom kang tensioner wheel, and the elevator rope breaker plays the role of overload protection, which is based on air as the arc extinguishing medium, and oil as the arc extinguishing medium. The function is overload protection, such as the instantaneous high current in the event of a short circuit, which can make the air open open in less than a second and not cause a disaster.

The elevator broken car rope opening and closing first open and closed protection on the bottom Qin Hu Kang tension wheel, the elevator broken rope switch plays the role of overload protection, with air as the arc extinguishing medium, in addition to oil as the arc extinguishing medium. The function is overload protection, such as the instantaneous high current in the event of a short circuit, which can make the air open open in less than a second and not cause a disaster.

The leakage protector is to protect the safety of people, as long as the electric impulse in the line is to sell the current energy to send which people or things leak to the earth to reach a certain value will trip, so as not to make people electrocuted, and the air can not protect people from electric shock.

You can refer to it.

Hope it helps.

Have a great day.

The elevator you are talking about is transmitted by the friction between the wire rope and the main engine traction wheel, and the car is transported up and down with the wire rope, which belongs to the traction elevator.

From the very beginning, there are many safety protection devices in the elevator, such as brakes, travel limits, limit limits, buffers, speed limiters, safety gears, etc., and there is no problem with safety performance.

The traction elevator drives at least two wire ropes, and some have as many as eight, and each wire rope has a safety margin. According to the redundant design principle, the possibility of all wire ropes breaking at the same time is almost zero, so it is impossible for the wire rope to break and fall.

In reality, there will be insufficient braking force of the brake, which will cause the elevator car to slip, slip a certain Qiaokai call distance (this distance is very small), the brake can not brake, or the speed exceeds a certain value of normal speed, the speed limiter mechanical action will be triggered, and the elevator will be powered off at the same time, lose the power source, if the elevator continues to slide at this time, run down (the distance of the slide is only a little at this time), the speed limiter and the safety gear linkage mechanism will lift the safety gear through the speed limiter wire rope, The safety gear will jam the elevator car on the guide rail, and at the same time, it will also trigger the electrical switch action of the safety gear, the entire elevator will be powered out, and the elevator car will also be in a stop state.

When the elevator slips to a complete stop, the downward distance will not be very long, and the time is also very short, many times it is a matter of an instant, so when taking the elevator, you can take the elevator in a civilized and standardized manner, and do not jump, jump, kick the car wall and other actions in the elevator car.

When the elevator is in a stopped state, it is not possible to blindly save itself, and should contact outsiders to rescue through the emergency rescue ** (or alarm signals, which are directly connected to the property duty room or maintenance unit) to ensure the safety of follow-up personnel.

Answer: The elevator rope breaking switch is usually installed on the top of the elevator shaft collapse, and the elevator driver's cab may also be installed in the elevator driver's room to disconnect the elevator power supply in an emergency.

Dear, the answer for your inquiry is: Hello, the elevator rope break is usually installed at the top of the elevator, its function is that when the elevator rope breaks, the rope break switch will automatically disconnect the power supply, so as to protect the safe operation of the elevator. The broken rope switch can also be manually operated to disconnect the electric annihilation Qiyuan Cong to change the branches, so as to carry out the maintenance and overhaul of the elevator.

Cause Analysis:

1.Abrasion This includes the wear between the wire rope and the rope groove, and also includes the wear between the strands inside the wire rope The effective cross-section is reduced and the tensile strength is reduced due to the wear, which can cause rope breakage and cause major accidents in serious cases.

2.Corrosion Corrosion will significantly reduce the life of the wire rope, which not only directly reduces the effective cross-sectional area of the wire, but also further aggravates the wear of the wire rope.

3.Uneven load The uneven load of the traction wire rope is an important factor affecting its life When the tensile load changes by 20% in the traction wire rope, the life of the wire rope can be reduced by up to 20% 30%.

Troubleshooting. 1.The wire diameter must be checked frequently, and the wire rope should be replaced in time after a certain degree of wear.

2.The precautionary measure for wear and corrosion is lubrication When manufacturing traction wire ropes, there is 1 oil-soaked hemp in the center, and the rope core leaks oil outward under re-pressure during use, and absorbs oil inward when it is out of use, so there is no need to consider lubrication in the early stage of use. However, after a long period of use, the oil of the rope core will gradually dry up, and it must be oiled regularly to reduce wear and prevent corrosion.

3.When lubricating the traction wire rope, it is necessary to achieve "transparent, thin, and right" Impermeable is not enough to eliminate internal friction; It is not thin, and it will affect the use of other parts, especially when used on the brake, it will also cause danger or slippage, and the hand can feel oily; If it is not right, it may reduce the traction capacity, constituting a hidden danger of squatting at the bottom and rushing to the top.

4.If there is a 20% change in tensile load, it can affect 20% 30% of the life of the wire rope, so the uneven force of the wire rope shall not exceed 5% to be found in time and adjusted in time to prevent major accidents and losses caused by broken ropes!!

Depending on what model you have, some can be connected, and some can't. But it can generally be connected, hehe, that is, it is connected with a card head. However, I know you don't want to use a card header.

The general joints are braided buckles. However, multi-layer strand wire rope 18*7 35*7 cannot be connected. Everything else can be braided and snapped.

Don't try to save some money. From the new or the buckle. That's the elevator. Once it falls off. But it's not something that tens of thousands of dollars or even money can solve. Let's get a new one.

Find an elevator professional maintenance personnel to replace the wire rope.

Only change.

1L, it's an elevator, you understand it first.

Elevator wire rope derailment, please check the wear of the traction wheel groove, as well as the elevator wire rope tension control, the tension difference of multiple wire ropes should be within 5%, otherwise, the service life of the wire rope will be reduced a lot.

China's annual output of 1.8 million tons of steel rope ranks first in the world, and the phosphated wire rope is the first time in the world to inhibit fretting fatigue and extend the service life (fatigue life) through surface treatment

1.Phosphate coated wire rope, the steel wire is phosphated by manganese or zinc-manganese, the wear-resistant, corrosion-resistant and rust-proof ability of the steel wire has jumped in an all-round way, and the service life is about 3 times that of the smooth wire rope with the same structure (pay attention to the difference between zinc-based phosphating for drawing and wear-resistant phosphating for rope making, although there are many enterprises in Tianjin, Jiangsu and other places, the supply is still tight, and the supply exceeds demand, which is an upgraded product of smooth wire rope, and can also replace the use of thin zinc galvanized wire rope).

2.Galvanized steel wire rope, hot-dip galvanized and electro-galvanized.

3.Stainless steel wire rope, 304 or 316 stainless steel.

4.Plastic-coated wire rope, on the basis of wire rope, the outer layer is coated with polyethylene or polypropylene.

5.The smooth wire rope will be completely eliminated by the phosphate coated wire rope.

Manganese phosphate coated wire rope is preferred in atmospheric environment, and hot-dip galvanized-phosphated double-coated wire rope is preferred in heavy corrosion environment.