CN114620582A - Elevator shaft wall vibration isolation system and setting method - Google Patents

Elevator shaft wall vibration isolation system and setting method Download PDF

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Publication number
CN114620582A
CN114620582A CN202111655113.1A CN202111655113A CN114620582A CN 114620582 A CN114620582 A CN 114620582A CN 202111655113 A CN202111655113 A CN 202111655113A CN 114620582 A CN114620582 A CN 114620582A
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China
Prior art keywords
vibration isolation
guide rail
elastic vibration
wall
elastic
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CN202111655113.1A
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Chinese (zh)
Inventor
俞英杰
蔡晓华
刘念思
马骧越
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Shanghai Mitsubishi Elevator Co Ltd
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Shanghai Mitsubishi Elevator Co Ltd
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Priority to CN202111655113.1A priority Critical patent/CN114620582A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
    • B66B11/0266—Passive systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The invention discloses a method for setting an elevator shaft wall vibration isolation system, wherein the elevator shaft wall vibration isolation system comprises an elastic vibration isolation part, and the method for setting the elevator shaft wall vibration isolation system comprises the following steps: calculating and solving a stress equation at the guide rail, and calculating the vibration displacement at the guide rail by converting the stress equation into a frequency domain equation; calculating and solving a stress equation of the stress on the guide rail transmitted to the wall surface of the well through the elastic vibration isolation part, and calculating the vibration displacement of the wall surface of the well; calculating the force transmission coefficient of the elastic vibration isolation component according to the vibration displacement at the guide rail and the vibration displacement at the wall surface of the well; determining the stiffness of the elastic vibration isolation member in the direction perpendicular to the well wall Y based on the force transfer coefficient of the elastic vibration isolation member
Figure DDA0003448075750000011
Stiffness of elastic vibration-isolating member in direction perpendicular to well wall Y
Figure DDA0003448075750000012
Set to a preset stiffness. The invention also discloses an elevator shaft wall vibration isolation system.

Description

Elevator shaft wall vibration isolation system and setting method
Technical Field
The invention relates to elevator equipment, in particular to a method for arranging an elevator shaft wall vibration isolation system, and the invention also relates to the elevator shaft wall vibration isolation system.
Background
At present, in many building designs, a living room or a bedroom is directly arranged on the wall of an elevator shaft, and the top-layer residents are troubled by elevator noise which is caused by solid sound transmission of the wall of the elevator shaft.
When the elevator car runs in the elevator shaft, vibration on the guide rail can be transmitted to the shaft wall body through the guide rail bracket. The traditional guide rail bracket has high rigidity in the direction vertical to the well wall, and can be regarded as being directly and rigidly connected with the well wall, the vibration on the guide rail side is directly transmitted to the well wall through the guide rail bracket, and the vibration and noise problems in a resident room are caused through the transmission of a building structure.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for setting an elevator shaft wall vibration isolation system, which can effectively isolate the indoor vibration noise of residents caused by vibration of guide rails by reasonably setting the rigidity of a guide rail bracket perpendicular to the mounting wall surface direction of the guide rail bracket.
In order to solve the technical problem, the invention discloses a method for setting an elevator shaft wall vibration isolation system, wherein the elevator shaft wall vibration isolation system comprises an elastic vibration isolation part, and the method for setting the elevator shaft wall vibration isolation system comprises the following steps:
calculating the force transmission coefficient of the elastic vibration isolation component by converting the stress equation at the guide rail and the stress equation at the wall surface of the well into a frequency domain equation;
determining the stiffness of the elastic vibration isolation member in the direction perpendicular to the well wall Y, based on the force transfer coefficient of the elastic vibration isolation member
Figure BDA0003448075730000011
Effective vibration reduction in a specific frequency band is realized;
stiffness of elastic vibration-isolating member in direction perpendicular to well wall Y
Figure BDA0003448075730000012
Set to a preset stiffness.
Preferably, the preset stiffness is set to be:
Figure BDA0003448075730000013
Mrailthe total mass of the unilateral guide rail is shown, and n is the total number of the elastic vibration isolation components adopted by the unilateral guide rail.
Preferably, in the step of calculating the stress equation at the preset guide rail, the stress equation at the guide rail when the car moves through the guide rail is:
Figure BDA0003448075730000021
wherein m israilThe mass of the section of guide rail corresponding to each elastic vibration isolation component; c is the structural damping of the elastic vibration isolation component; f (t) corresponding exciting force is given to the guide rail when the elevator car moves through the guide rail section; y is a vibration displacement of the guide rail in a direction perpendicular to the wall surface of the hoistway in which the elastic vibration isolation member is installed.
Preferably, the stress on the guide rail is transmitted to the wall of the well through the elastic vibration isolation component according to the following stress equation:
Figure BDA0003448075730000022
wherein C is the structural damping of the resilient vibration isolation member.
Preferably, the elastic vibration insulating member has a force transmission coefficient T:
Figure BDA0003448075730000023
where η is a frequency ratio of an excitation frequency applied to the guide rail to a natural frequency of the guide rail-elastic vibration isolation member system, and ζ is a damping ratio of the guide rail-elastic vibration isolation member system.
Preferably, the guide rail deforms by no more than 5mm when vibrated.
Preferably, the preset stiffness is set to be:
Figure BDA0003448075730000024
Mrailthe total mass of the single-side guide rail is shown, and n is the total number of elastic vibration isolation parts adopted by the single-side guide rail.
The invention also discloses an elevator shaft wall vibration isolation system, which comprises:
the guide rail pressing plate clamps and fixes the guide rail on the elastic vibration isolation component; the elastic vibration isolation member is fixed to the wall of the well.
The rigidity of the guide rail bracket perpendicular to the mounting wall surface of the guide rail bracket is reasonably set, so that the problem of vibration noise in a household room caused by vibration of the guide rail can be effectively isolated.
Drawings
Fig. 1 is a sectional view of an elevator hoistway wall vibration isolation system of embodiment 1;
fig. 2 is a graph comparing the force transfer coefficient on a hoistway wall using an elevator hoistway wall vibration isolation system and using a conventional guide rail bracket.
Fig. 3 is a schematic view of the vibration isolation system for the hoistway wall according to the present invention.
Wherein the reference numerals are as follows:
1 is a guide rail 2 elastic vibration isolation component
3 is a pressing plate of a 4-guide rail of a well wall
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Inventive example 1
In order to solve the problems, the invention provides an elevator shaft wall vibration isolation system, which comprises a guide rail pressing plate 4, an elastic vibration isolation part 2;
the guide rail pressing plate 4 clamps and fixes the guide rail 1 on the elastic vibration isolation component 2 through bolts;
the elastic vibration isolation component 2 is fixed on the well wall 3 through an expansion bolt;
the rigidity of the conventional guide rail bracket in the direction perpendicular to the Y direction of the well wall is krigidAll approximate to a pure rigid body;
the rigidity of the elastic vibration-isolating member 2 in the present invention in the direction perpendicular to the well wall Y
Figure BDA0003448075730000031
The method comprises the following steps:
Figure BDA0003448075730000032
the effective vibration and noise reduction effect can be realized in a noise sensitive frequency domain above 50 Hz.
Formula (1) MrailThe total mass of the unilateral guide rail is shown, and n is the total number of the elastic vibration isolation components adopted by the unilateral guide rail.
Fig. 2 is a graph showing a comparison of force transmission coefficients of the elastic vibration isolating member 2 on the well wall 3 after the elastic vibration isolating member 2 satisfying the above-described Y-direction rigidity setting is used.
When the car moves, the vibration of the guide rail in the Y direction perpendicular to the wall of the wall-side assembly-mounted hoistway transmits a force to the elastic vibration-insulating member 2.
Assuming that the mass of the section of the guide rail corresponding to each elastic vibration isolation member is mrail＝MrailAnd/n, the structural damping of the elastic vibration isolation part 2 is C, and when the lift car moves through the section of guide rail, the corresponding exciting force given to the guide rail is F (t), so that the stress equation at the guide rail is as follows:
Figure BDA0003448075730000033
the conversion to the frequency domain equation is:
[(jω)2mrail+jωC+kbracket_y]y＝F(ω) (3)
the following can be obtained:
y
natural frequency f of guide rail-elastic vibration isolation component system0And natural angular frequency omega0Comprises the following steps:
Figure BDA0003448075730000041
ω0
and carrying out (4) to obtain;
y
critical damping due to rail-elastic vibration isolation component system CcComprises the following steps:
Figure BDA0003448075730000042
the damping ratio of the rail-elastic vibration isolation member system is thus ζ:
Figure BDA0003448075730000043
assuming that the frequency ratio of the excitation frequency to which the guide rail is subjected to and the natural frequency of the guide rail-elastic vibration isolation member system is η:
Figure BDA0003448075730000044
by bringing expressions (9) and (10) into expression (4), the rail vibration displacement y in the direction perpendicular to the wall surface of the hoistway to which the elastic vibration damping member is attached is:
y
likewise, the stress on the guide rail is transmitted to the wall of the well through the elastic vibration isolation component, and the stress equation is as follows:
Figure BDA0003448075730000045
it can be deduced that:
y
this makes it possible to obtain the force transmission coefficient T of the elastic vibration damping member:
Figure BDA0003448075730000051
for conventional guide rail mounts, the Y-direction stiffness krigidThe damping structure is very large, is similar to a pure rigid body, and has no damping effect when T is approximately equal to 1;
for elastic vibration-isolating members, as
Figure BDA0003448075730000052
For frequencies above the natural frequency of the vibration isolation system of the elevator shaft wall
Figure BDA0003448075730000053
The elastic vibration isolation component has good vibration damping effect due to the multiplied vibration excitation frequency, so that the force transmitted to the well wall through the elastic vibration isolation component is greatly attenuated. Since the human body is not sensitive to noise of 50Hz or less, the rigidity of the elastic vibration-isolating member in the Y direction in the formula (1) can be obtained
Figure BDA0003448075730000054
The vibration excitation of different elevators is different, the quality of the guide rails under different guide rail selection types is also different, and the overall equivalent stiffness k in the Y direction of the elastic vibration isolation component is reasonably designedbracket_yAdjusting natural frequency omega of vibration isolation system of elevator shaft wall0The condition that the building structure vibrates and noise is radiated into a building room when the elevator runs can be obviously improved.
Meanwhile, in consideration of safety requirements, when the elevator runs, the elevator car impacts the guide rail to apply corresponding impact force to the guide rail, and in order to ensure that the deformation of the guide rail is not more than 5mm, the rigidity of the elastic vibration isolation component in the direction vertical to the well wall Y is ensured
Figure BDA0003448075730000055
Therefore, on the basis of ensuring safety, in order to realize vibration and noise reduction effects, the rigidity of the elastic vibration isolation component in the direction vertical to the well wall Y is ensured
Figure BDA0003448075730000056
The method comprises the following steps:
Figure BDA0003448075730000057

Claims (11)

1. an elevator shaft wall vibration isolation system setting method is characterized in that the elevator shaft wall vibration isolation system comprises an elastic vibration isolation component, and the elevator shaft wall vibration isolation system setting method comprises the following steps:
calculating the force transmission coefficient of the elastic vibration isolation component by converting the stress equation at the guide rail and the stress equation at the wall surface of the well into a frequency domain equation;
determining the stiffness of the elastic vibration isolation member in the direction perpendicular to the well wall Y, based on the force transfer coefficient of the elastic vibration isolation member
Figure FDA0003448075720000011
Effective vibration reduction in a specific frequency band is realized;
stiffness of elastic vibration-isolating member in direction perpendicular to well wall Y
Figure FDA0003448075720000012
Set to a preset stiffness.
2. The elevator hoistway wall vibration isolation system setting method of claim 1, wherein the preset stiffness is set to:
Figure FDA0003448075720000013
Mrailthe total mass of the unilateral guide rail is shown, and n is the total number of the elastic vibration isolation components adopted by the unilateral guide rail.
3. The elevator hoistway wall vibration isolation system setting method of claim 1, wherein in the step of calculating the force equation at the preset guide rail, the force equation at the guide rail when the car moves past the guide rail is:
Figure FDA0003448075720000014
wherein m israilThe mass of the section of guide rail corresponding to each elastic vibration isolation component; c is the structural damping of the elastic vibration isolation component; f (t) corresponding exciting force is given to the guide rail when the elevator car moves through the section of the guide rail; y is the vibration displacement of the guide rail in the direction perpendicular to the wall surface of the hoistway where the elastic vibration isolation member is installed.
4. The method of providing an elevator hoistway wall vibration isolation system of claim 1,
the stress equation of the stress transmitted to the wall of the well through the elastic vibration isolation part on the guide rail is as follows:
Figure FDA0003448075720000015
wherein C is the structural damping of the elastic vibration isolation component, and y is the vibration displacement of the guide rail in the direction perpendicular to the wall surface of the well on which the elastic vibration isolation component is mounted.
5. The method of providing an elevator hoistway wall vibration isolation system of claim 1,
the elastic vibration isolation member has a force transmission coefficient T of:
Figure FDA0003448075720000016
wherein η is a frequency ratio of an excitation frequency applied to the guide rail to a natural frequency of the guide rail-elastic vibration isolation member system, and ζ is a damping ratio of the guide rail-elastic vibration isolation member system.
6. The method of providing an elevator hoistway wall vibration isolation system of claim 5,
the frequency ratio of the excitation frequency applied to the guide rail to the natural frequency of the guide rail-elastic vibration isolation component system is eta:
Figure FDA0003448075720000021
wherein f is0For natural frequency, omega, of rail-elastic vibration-isolating component systems0Is the natural angular frequency of the rail-resilient vibration isolation member system.
7. The method of providing an elevator hoistway wall vibration isolation system of claim 6,
the damping ratio ζ of the rail-elastic vibration isolation member system was:
Figure FDA0003448075720000022
wherein, ω is0Is the natural angular frequency, m, of the rail-elastic vibration-isolating component systemrailThe mass of the section of rail corresponding to each resilient vibration isolating member.
8. The method of providing an elevator hoistway wall vibration isolation system of claim 7,
the natural frequency and natural angular frequency of the resilient vibration isolation member system are calculated as:
Figure FDA0003448075720000023
Figure FDA0003448075720000024
9. the method of providing an elevator hoistway wall vibration isolation system of claim 1,
the deformation of the guide rail during vibration is not more than 5 mm.
10. The method of providing an elevator hoistway wall vibration isolation system of claim 1,
setting the preset stiffness as:
Figure FDA0003448075720000025
Mrailthe total mass of the single-side guide rail is shown, and n is the total number of elastic vibration isolation parts adopted by the single-side guide rail.
11. An elevator hoistway wall vibration isolation system using an elevator hoistway wall vibration isolation system setting method according to any one of claims 1 to 7, comprising:
the guide rail pressing plate clamps and fixes the guide rail on the elastic vibration isolation component; the elastic vibration isolation member is fixed to the wall of the well.
CN202111655113.1A 2021-12-30 2021-12-30 Elevator shaft wall vibration isolation system and setting method Pending CN114620582A (en)

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Application Number Priority Date Filing Date Title
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102616624A (en) * 2012-03-26 2012-08-01 厦门嘉达环保建造工程有限公司 Guide rail vibration isolation structure
CN106365020A (en) * 2016-12-07 2017-02-01 常州工邦减振设备有限公司 Novel elevator tractor belt swing-resistant damping device
CN206244236U (en) * 2016-12-07 2017-06-13 常州工邦减振设备有限公司 A kind of novel elevator tractor belt is anti-to wave vibration absorber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102616624A (en) * 2012-03-26 2012-08-01 厦门嘉达环保建造工程有限公司 Guide rail vibration isolation structure
CN106365020A (en) * 2016-12-07 2017-02-01 常州工邦减振设备有限公司 Novel elevator tractor belt swing-resistant damping device
CN206244236U (en) * 2016-12-07 2017-06-13 常州工邦减振设备有限公司 A kind of novel elevator tractor belt is anti-to wave vibration absorber

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