How to ensure the comfort of high-speed elevators, reduce noise?

- Jun 21, 2017-

The elevator in the operation of the comfort and experience is very important. The first is the rationality of structural design, such as the safety part of the steel, strength, to ensure the reliability of the use of safety components; The weight of the car designed to ensure the stability of the elevator, the gantry Liangman foot tensile strength under the conditions of use, must have a certain degree of elasticity. In a word, there should be steel and elasticity between the guideway bracket and the gantry girder of the car. The aim is to reduce the contact surface error caused by the straightness of the guideway during installation, and to ensure the comfort and noise of the elevator in operation by means of several reasonable structural measures, such as guide shoe, rubber damping pad, straight beam, guideway bracket and control system.

The noise generated by the traction machine is related to the matching power size. Current, bearing, traction wheel rope groove geometry is the cause of the noise, that is, the noise source, because the object in the movement will have friction, friction will reduce the utility power, the power of the motor noise after the increase. However, the friction between the wire rope and the rope groove of the traction Wheel is a source of both advantages and disadvantages. The following comparison is made between the 1:1 traction pulley rope groove and the 2:1 rewinding pulley rope groove.

The 1:1 Rope Groove adopts V-shaped groove, and the wire rope is increase in the V-groove and the deformation of the wire rope increases. Wire rope In the groove will have jitter, while the jitter will pass through the wire rope to the car, even if the rubber block to solve the sound problem can only be solved, can not solve the jitter problem. The idea of solving this problem is to change the geometry of the rope groove of the traction Wheel, R-Arc and guide-wheel rope groove, increase the friction force between the two rounds to improve the car and the weight, but the slot and groove spacing is not too large, R Groove Surface roughness of 0.8, because the traction wheel and guide wheel dislocation a groove, steel rope in and out of the groove when a bit of slope, this requires that the smoothness of the r groove to be very high, wire rope in and out of the groove smooth in and out, so that the outline rope without jitter, but then traction wheel and guide wheel between the tension is 10 times times the car from gravity, two rounds of the angle and friction force increase large, the geometrical shape of R-Rope has a very small effect on the wire rope variant, which has a good protective effect, and the noise and jitter problems are greatly improved.

In the elevator using the Worm tractor age, the car noise is now the permanent Magnet Synchronous inverter traction machine several times, this is because of machining accuracy error, assembly error, resulting in worm gear and worm in the rotation of the noise generated by the wire rope passed to the car. The car wall is made of thin steel plate, so it is easy to conduct and amplify noise. In addition now car decoration more in the car wall with adhesive paste, new decoration materials and steel plate between the adhesive is both adhesive layer and reduce noise layer. Car decoration also increase plus the car, some companies in the bottom of the car affixed marble, in the upper and lower car car bottom weight increase, swing natural will reduce, comfort greatly improved, noise greatly reduced.

Each elevator product in the manufacture, after the factory is the same, but through the installation of different installation team has produced a difference. The alignment of the rails is closely related to the swinging of the car when the elevator is running. The elevator guide rail has three contact surfaces with the boot lining, in the running, while the car roof has two boot, the car bottom has two guide boots, if the contact surface through the curved guide rail, the gantry straight beam steel is too hard to eliminate elastic deformation, the car will be with the guide of the curved line and swing. If the weight of the car, the distortion of the swing will be reduced, this is the object in the operation of the dynamic view.

Because of the air pressure resistance and the friction of the car body in the operation of the high speed elevator car, it is also a main cause of the noise of the car. The author's research design is the appearance of the car, including the car roof, car bottom are designed into a tapered structure, external design for a very smooth streamline shape, do not use the car with steps to reduce air resistance. In addition, there must be a certain area of the hole in the roof to reduce the elevator in the high-speed operation of the wind pressure resistance, this design to reduce noise, lift the comfort of the ladder has obvious effect.