CN113247740B - Elevator car wall structure - Google Patents

Elevator car wall structure Download PDF

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Publication number
CN113247740B
CN113247740B CN202110564431.0A CN202110564431A CN113247740B CN 113247740 B CN113247740 B CN 113247740B CN 202110564431 A CN202110564431 A CN 202110564431A CN 113247740 B CN113247740 B CN 113247740B
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China
Prior art keywords
car wall
skirting
elevator car
resonant cavity
plate
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CN113247740A (en
Inventor
刘念思
俞英杰
马骧越
解红磊
郑斌
蔡晓华
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Shanghai Mitsubishi Elevator Co Ltd
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Shanghai Mitsubishi Elevator Co Ltd
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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
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • 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
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B66B11/024—Ventilation systems
    • 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
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B66B11/0253—Fixation of wall panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The invention discloses an elevator car wall structure, which is characterized in that a sealing plate, a car wall vertical surface and a car wall lower transverse folding surface jointly form a noise elimination air channel, a section mutation area of each upper clamping plate of the sealing plate is buckled with the car wall vertical surface to form a resonant cavity of an air inlet channel, air enters a car through the air inlet channel, a main channel and corresponding vent holes formed on the car wall lower transverse folding surface and a kick upper transverse surface, and the volume and the shape of the resonant cavity are designed according to the specific frequency of a well, so that the modal frequency of the resonant cavity is ensured to be superposed with the specific frequency of the well, the specific frequency of the well can be improved by the noise elimination air channel, the overall contour size of the car wall structure of the car can not be increased while the ventilation area is ensured to be unchanged, the noise in the car is reduced, the interference with other parts of the car can not be caused, and the installation process does not need additional processes and is convenient.

Description

Elevator car wall structure
Technical Field
The invention relates to an elevator car, in particular to an elevator car wall structure.
Background
Elevator car systems are based on standards related to elevator manufacturing and installation safety codes, wherein GB7588-2003 states that the upper and lower parts of the elevator car must be provided with ventilation openings, and that the effective area of both the upper and lower ventilation openings is no less than 1% of the effective area of the elevator car. Most elevator single wall car designs today are shown in fig. 1. The lift car is mainly divided into a car top, a car wall and a car bottom; because of the needs of draught area, when traditional car assembly, the sedan-chair wall leaves certain gap with sedan-chair top, sedan-chair bottom respectively in order to guarantee that draught area is enough. The great gap can cause the direct car that passes through of well noise transmission in the gap, leads to the car sound insulation not good, reduces the travelling comfort when the elevator takes.
Chinese patent document CN205990142U discloses an elevator car ventilation structure, the top and bottom of the car wall are respectively provided with a connecting edge folded to the back, the car wall cover plate covers the back of the car wall, the upper end of the car wall cover plate is lapped on the connecting edge at the top of the car wall, the lower end of the car wall cover plate is lapped on the connecting edge at the bottom of the car wall, the car wall cover plate and the car wall enclose a hollow space, and the soundproof cotton layer is arranged on the back of the car wall and is positioned between the car wall and the car wall cover plate. The soundproof cotton layer extends the laminating from top to bottom at the back of sedan-chair wall, and outer ventilation hole has been seted up to the centre of sedan-chair wall apron, forms between soundproof cotton layer and the sedan-chair wall apron to be linked together with outer ventilation hole and follow the gap of taking a breath of vertical direction extension from top to bottom. The top of the car wall is provided with an upper vent hole which is communicated with the inside of the elevator car and the ventilation gap, and the bottom of the car wall is provided with a lower vent hole which is communicated with the inside of the elevator car and the ventilation gap. The upper end on soundproof cotton layer and the connection limit portion at the top of sedan-chair wall have the gap that ventilates on having between the limit portion, have the gap that ventilates down between the lower extreme on soundproof cotton layer and the connection limit portion of the bottom of sedan-chair wall. After entering from the outer vent hole of the car wall cover plate 4, the airflow is divided into two airflows along the ventilation gap, wherein one airflow upwards passes through the upper ventilation gap between the soundproof cotton layer and the connecting edge part of the top part of the car wall along the ventilation gap and then enters the inside of the car through the upper vent hole; another air current is along the lower ventilation gap between the connection limit portion of the bottom of taking a breath gap downward process soundproof cotton layer and sedan-chair wall, again via the inside of lower vent entering car to make elevator car ventilation structure realize natural taking a breath. This elevator car ventilation structure needs to set up the last ventilation hole and the lower ventilation hole towards elevator car inboard at sedan-chair wall top and bottom, and the last ventilation hole and the lower ventilation hole towards elevator car inboard influence elevator car pleasing to the eye, need cover interior decoration sedan-chair wall in sedan-chair wall inboard and shelter from going up ventilation hole and lower ventilation hole, and is with high costs to can increase car weight or reduce the effective volume of car.
Disclosure of Invention
The invention aims to solve the technical problem of providing an elevator car wall structure, which can improve the acoustic impedance of a silencing air channel to the specific frequency of a well, does not increase the overall outline size of the car wall structure of the elevator car and interfere with other parts of the elevator car while ensuring the ventilation area to be unchanged and reducing the noise in the elevator car, and is convenient to install without an additional process in the installation process.
In order to solve the technical problem, the elevator car wall structure provided by the invention comprises a car wall plate 1, a skirting board 2 and a sealing plate 3;
the skirting board 2 comprises a skirting upper transverse surface 21 and a skirting vertical surface 22 which are connected together;
the outer end of the upper skirting transverse plane 21 is connected with the upper end of the vertical skirting plane 22;
the car wall plate 1 comprises a car wall vertical surface 11 and a car wall lower transverse folding surface 12;
the inner end of the car wall lower transverse folding surface 12 is connected with the lower end of the car wall vertical surface 11;
the lower transverse folding surface 12 of the car wall is attached to the upper transverse surface 21 of the skirting;
the sealing plate 3 comprises a transverse buckling plate 30 and m upper buckling plates 31, wherein m is a positive integer;
the m upper buckling plates 31 are connected to the upper side of the transverse buckling plate 30;
the sealing plate 3 is buckled to the outer side of the car wall plate 1 to form a silencing air channel;
the transverse buckle plate 30 is buckled with the vertical surface 11 of the car wall to form a main channel 40 of a silencing air channel;
the lower end of the cross buckle plate 30 is hermetically connected with the car wall lower cross folding surface 12 of the car wall plate 1;
the m upper buckle plates 31 are buckled with the car wall vertical surface 11 to form m air inlet channels 41 of the silencing air duct;
the upper buckle plate 31 is provided with a section mutation area;
the section abrupt change area of each upper buckle plate 31 is buckled with the vertical surface 11 of the car wall to form a resonant cavity 410 of an air inlet channel 41;
the modal frequency of the resonant cavity 410 coincides with the hoistway specific frequency;
a ventilation hole communicated with the silencing air duct is formed on the lower transverse folding surface 12 of the car wall and the upper transverse surface 21 of the skirting, which are attached together;
the lower end of the vertical skirting surface 22 of the skirting board 2 is used for abutting against the bottom plate of the elevator car.
Preferably, the specific frequency of the well is 200 Hz-400 Hz.
Preferably, the cross section of the resonance cavity of the air intake channel 41 is rectangular;
the cross sections of all parts outside the resonant cavity of the air inlet channel 41 are the same rectangle; .
The cross-sectional front-to-back length at resonant cavity 410 is greater than the cross-sectional length everywhere outside the resonant cavity;
the cross-sectional inner and outer widths at resonant cavity 410 are equal to the cross-sectional inner and outer widths everywhere outside the resonant cavity.
Preferably, the resonant cavity 410 is a rectangular parallelepiped;
the length, width and height of the resonant cavity 410 are x, y and z;
Figure BDA0003080374780000021
n x is an integer of 1 to 6,n y Is an integer of 1 to 6,n z Is an integer of 1 to 6,c 0 Is the air speed of sound, and f is the hoistway specific frequency.
Preferably, the cross-section mutation areas of the upper pinch plates 31 are buckled with the car wall vertical surface 11 to form a resonant cavity 410 of the air inlet channels 41;
the modal frequencies of the resonant cavities 410 of the different inlet air channels 41 coincide with different hoistway-specific frequencies.
Preferably, sound-absorbing material 9 is adhered to the air duct side of the sealing plate 3, the car wall vertical surface 11 or the car wall lower transverse folding surface 12 which enclose the noise-damping air duct outside the resonant cavity 410.
Preferably, the sound absorption material 9 is made of sound absorption cotton.
Preferably, the non-attaching surface of the sound-absorbing material 9 is formed with sound-absorbing wedges.
Preferably, the sound-absorbing wedge is triangular or conical in shape.
Preferably, sound-absorbing material 9 is disposed on two opposite sides of the sound-damping air duct outside the resonant cavity 410, and the sound-absorbing wedges of the sound-absorbing material 9 disposed on two opposite sides are staggered with each other.
Preferably, the upper skirting cross surface 21 of the skirting board 2 is used for buckling the interior buckle plate 6 with the bottom plate of the elevator car;
the ventilation holes are formed on the lower transverse folding surface 12 of the car wall and the upper transverse surface 21 of the skirting, which are attached and installed between the interior trim buckle plate 6 and the vertical surface 22 of the skirting.
Preferably, a gap of 0.1-2 mm is formed between the interior gusset plate 6 and the bottom plate of the elevator car.
Preferably, the cross section of the skirting board 2 is in a shape of "]", and the skirting board is divided into a skirting upper transverse plane 21, a skirting vertical plane 22 and a skirting lower transverse plane 23;
the lower skirting transverse surface 23 of the skirting board 2 is abutted against the bottom plate of the elevator car;
the interior trim buckle 6 is buckled between the upper transverse surface 21 of the skirting and the lower transverse surface 23 of the skirting;
a gap of 0.1 mm-2 mm is formed between the interior trim buckle 6 and the lower transverse surface 23 of the skirting.
Preferably, the sum of the effective ventilation areas of the m air inlet channels 41, the effective ventilation area of the main channel 40 and the total area of the ventilation holes are not smaller than the effective area specified by national standard, industrial standard or international standard.
Preferably, the cross-section of the air intake channel 41, the vent hole, is square or circular.
The invention relates to an elevator car wall structure of an elevator car, which is characterized in that a sealing plate 3, a car wall vertical surface 11 and a car wall lower transverse folding surface 12 jointly enclose a silencing air channel to replace a gap between a car wall and a skirting board, a section mutation area of each upper clamping plate 31 of the sealing plate 3 is buckled with the car wall vertical surface 11 to form a resonant cavity 410 of an air inlet channel 41, air enters the elevator car through the air inlet channel 41, a main channel 40 and corresponding vent holes formed on the car wall lower transverse folding surface 12 and a skirting upper transverse surface 21, and the volume and the shape of the resonant cavity 410 are designed aiming at specific well frequency, so that the modal frequency of the resonant cavity is coincident with the specific well frequency, the acoustic impedance of the silencing air channel to the specific well frequency can be improved, the overall contour size of the car wall structure of the elevator car can not be increased while the ventilation area is unchanged, the noise in the elevator car is reduced, interference with other parts of the elevator car can not be interfered, and the installation process is not needed.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional single-wall car structure and car gaps;
fig. 2 is a structural view of an embodiment of the wall structure of the elevator car of the present invention;
FIG. 3 is a cross-sectional view of a muffling air channel of an embodiment of the elevator car wall structure of the present invention;
fig. 4 is a schematic view of a sound absorbing material of an embodiment of the elevator car wall structure of the present invention.
The reference numbers in the figures illustrate that:
1, a car wall plate; 11 car wall vertical plane; 12 car wall lower transverse folding surfaces; 2 skirting boards; 21 kick upper transverse surface; 22 skirting vertical surfaces; 23 skirting lower transverse plane; 3, closing the plate; 30 transverse buckle plates; 31, an upper buckle plate; 40 a main channel; 41 air inlet channels; 410 a resonant cavity; 9 sound absorbing material; 6 inner decorative buckle.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 2 and 3, the elevator car wall structure comprises a car wall plate 1, a skirting board 2 and a sealing plate 3;
the skirting board 2 comprises a skirting upper transverse surface 21 and a skirting vertical surface 22 which are connected together;
the outer end of the upper skirting transverse plane 21 is connected with the upper end of the vertical skirting plane 22;
the car wall plate 1 comprises a car wall vertical surface 11 and a car wall lower transverse folding surface 12;
the inner end of the car wall lower transverse folding surface 12 is connected with the lower end of the car wall vertical surface 11;
the lower transverse folding surface 12 of the car wall is attached to the upper transverse surface 21 of the skirting;
the sealing plate 3 comprises a transverse buckling plate 30 and m upper buckling plates 31, wherein m is a positive integer;
the m upper buckling plates 31 are connected to the upper side of the transverse buckling plate 30;
the sealing plate 3 is buckled to the outer side of the car wall plate 1 to form a silencing air duct;
the transverse buckle plate 30 is buckled with the vertical surface 11 of the car wall to form a main channel 40 of a silencing air channel;
the lower end of the cross buckle plate 30 is hermetically connected with the car wall lower cross folding surface 12 of the car wall plate 1;
the m upper buckle plates 31 are buckled with the car wall vertical surface 11 to form m air inlet channels 41 of the silencing air duct;
the upper buckle plate 31 is provided with a section mutation area;
the section abrupt change area of each upper buckle plate 31 is buckled with the vertical surface 11 of the car wall to form a resonant cavity 410 of an air inlet channel 41;
the modal frequency of the resonant cavity 410 coincides with the hoistway-specific frequency;
the lower transverse folding surface 12 of the car wall and the upper transverse surface 21 of the skirting which are attached together form a vent hole communicated with the silencing air duct;
the lower end of the vertical skirting surface 22 of the skirting board 2 is used for abutting against the bottom plate of the elevator car.
Preferably, the specific frequency of the well is 200 Hz-400 Hz (e.g. 300 Hz).
In the elevator car wall structure according to the first embodiment, the lower cross-sectional surface 12 of the car wall 1 and the upper cross-sectional surface 21 of the skirt board 2 are attached to each other to form a gap, the cross-sectional plate 30 of the sealing plate 3 is fastened to the vertical surface 11 of the car wall to form the main channel 40 of the muffling air duct, the m upper plates 31 on the upper portion of the sealing plate 3 are fastened to the vertical surface 11 of the car wall to form the m air inlet channels 41 of the muffling air duct, the m air inlet channels 41 are communicated with the main channel 40, the main channel 40 and the m air inlet channels 41 together form the muffling air duct, the lower end of the cross-sectional plate 30 is hermetically connected to the lower cross-sectional surface 12 of the car wall 1, the lower cross-sectional surface 12 of the car wall and the upper cross-sectional surface 21 attached to each other are provided with the vent holes communicated with the muffling air duct, the cross-sectional abrupt change region of each upper plate 31 is fastened to the vertical surface 11 of the car wall to form the resonant cavity 410 of one air inlet channel 41, and the frequency of the mode 410 coincides with the specific frequency of the hoistway. The elevator car wall structure is characterized in that a sealing plate 3, a car wall vertical surface 11 and a car wall lower transverse folding surface 12 jointly enclose a noise elimination air duct to replace a gap between a car wall and a skirting board, a section mutation area of each upper buckling plate 31 of the sealing plate 3 is buckled with the car wall vertical surface 11 to form a resonant cavity 410 of an air inlet channel 41, air passes through the air inlet channel 41, a main channel 40 and corresponding vent holes formed in the car wall lower transverse folding surface 12 and the kick upper transverse surface 21 to enter a car, and the volume and the shape of the resonant cavity 410 are designed aiming at specific well frequencies, so that the modal frequency of the resonant cavity is coincident with the specific well frequencies, the acoustic impedance of the noise elimination air duct to the specific well frequencies can be improved, the ventilation area is ensured to be unchanged, the noise in the car is reduced, the overall contour size of the car wall structure of the elevator car wall structure cannot be increased, the elevator car wall structure cannot interfere with other parts of the car, and an additional process is not needed in the installation process, and the installation is convenient.
Example two
Based on the first embodiment of the elevator car wall structure, the cross section of the resonant cavity of the air inlet channel 41 is rectangular;
the cross sections of all parts outside the resonant cavity of the air inlet channel 41 are the same rectangle; .
The cross-sectional front-to-back length at resonant cavity 410 is greater than the cross-sectional length everywhere outside the resonant cavity;
the cross-sectional inner and outer widths at the resonant cavity 410 are equal to the cross-sectional inner and outer widths at locations outside the resonant cavity.
EXAMPLE III
Based on the elevator car wall structure of the first embodiment, the resonant cavity 410 is a rectangular parallelepiped;
the length, width and height of the resonant cavity 410 are x, y and z;
Figure BDA0003080374780000051
n x is an integer of 1 to 6,n y Is an integer of 1 to 6,n z Is an integer of 1 to 6,c 0 Is emptyThe speed of gas sound, f, is the specific frequency of the well.
Implementing the third elevator car wall structure, the resonant cavity 410 is a cuboid, the length, width and height of the resonant cavity 410 are respectively the order n in the calculation formula of x, y and z x 、n y 、n z The value is preferably 1 to 6, and the effect is better when the order is smaller under the permission of the structure size; this application is because noise elimination wind channel and sedan-chair wallboard 1 design are as an organic whole, and sound incidence direction is mainly for going up and down highly to (z to), for not increasing car profile size, and fore-and-aft length direction (x to) can design according to the formula, and interior outer width direction (y to) can not design according to the formula. As the target frequency (hoistway-specific frequency) decreases, the size of the resonant cavity increases, and the resonant cavity is more effective for high frequency noise in view of the size limitation of the resonant cavity and the sound frequency characteristics.
Example four
Based on the elevator car wall structure of the first embodiment, the section mutation areas of the upper buckling plates 31 are buckled with the car wall vertical surface 11 to form a resonant cavity 410 of a plurality of air inlet channels 41;
the modal frequencies of the resonant cavities 410 of the different air intake passages 41 coincide with different hoistway-specific frequencies.
For example, the section abrupt change regions of the 3 upper pinch plates 31 are buckled with the car wall vertical surface 11 to form resonant cavities 410 of the 3 air inlet channels 41; the modal frequencies of the resonant cavities 410 of the 3 air inlet channels 41 are 200Hz, 300Hz and 400Hz, respectively.
The fourth elevator car wall structure is implemented, and the plurality of resonant cavities 410 are arranged in the silencing air duct, so that hoistway noises with a plurality of frequencies can be effectively eliminated.
EXAMPLE five
Based on the first embodiment of the elevator car wall structure, the sound-absorbing material 9 is adhered to the air duct side surface of the sealing plate 3, the car wall vertical surface 11 or the car wall lower transverse folding surface 12 which enclose the noise-elimination air duct outside the resonant cavity 410.
Preferably, the sound absorption material 9 is made of sound absorption cotton or other sound absorption materials.
And the fifth elevator car wall structure is implemented, and the silencing air channel has a silencing function while ventilating the car.
EXAMPLE six
In the elevator car wall structure according to the fifth embodiment, as shown in fig. 4, sound absorbing wedges are formed on the non-adhesion surface of the sound absorbing material 9.
Preferably, the shape of the sound-absorbing wedge may be triangular or conical, the sound-absorbing wedge being as large as possible without affecting the ventilation area.
Preferably, the sound-absorbing materials 9 are arranged on two opposite sides of the muffling air channel outside the resonant cavity 410, and the sound-absorbing wedges of the sound-absorbing materials 9 arranged on two opposite sides are staggered with each other, so that the ventilation area is not affected by the design of the sound-absorbing wedges, and the sound-absorbing capacity can be improved.
Implement six elevator car sedan-chair wall structures, for improving the effect of inhaling the sound in the noise elimination wind channel, optimize the sound-absorbing material shape, inhale the sound wedge at the attached surface design of sound-absorbing material 9 non-, improve the effect of inhaling the sound.
EXAMPLE seven
Based on the first implementation of the elevator car wall structure, an inner decorative buckle plate 6 is buckled between the upper skirting transverse surface 21 of the skirting board 2 and the elevator car bottom plate;
the ventilation holes are formed on the lower transverse folding surface 12 of the car wall and the upper transverse surface 21 of the skirting, which are attached and installed between the interior trim buckle plate 6 and the vertical surface 22 of the skirting.
Preferably, a gap of 0.1-2 mm is formed between the interior gusset plate 6 and the bottom plate of the elevator car.
Example eight
Based on the first embodiment of the elevator car wall structure, the cross section of the skirting board 2 is in a shape of a cross section of a triangle, and the skirting board is divided into a skirting upper transverse plane 21, a skirting vertical plane 22 and a skirting lower transverse plane 23;
the lower skirting transverse surface 23 of the skirting board 2 is abutted against the bottom plate of the elevator car;
the interior trim buckle 6 is buckled between the upper transverse surface 21 of the skirting and the lower transverse surface 23 of the skirting;
a gap of 0.1 mm-2 mm is formed between the interior trim buckle 6 and the lower transverse surface 23 of the skirting.
Implement eight elevator car sedan-chair wall structures, air passes through inlet air channel 41, main entrance 40, ventilation hole, gets into the car through interior trim buckle 6 and baseboard 2 gap at last, guarantees that the unchangeable while of draught area can not increase car overall dimension, avoids interfering with other parts.
Example nine
Based on the elevator car wall structure of the first embodiment, the sum of the effective ventilation areas of the m air inlet channels 41, the effective ventilation area of the main channel 40 and the total area of the ventilation holes are not smaller than the effective area specified by the relevant standard (national standard, industrial standard or international standard).
Preferably, the cross-section of the air intake channel 41 and the vent holes may be any shape such as square, circle, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (15)

1. An elevator car wall structure is characterized by comprising a car wall plate (1), a skirting board (2) and a sealing plate (3);
the skirting board (2) comprises a skirting upper transverse surface (21) and a skirting vertical surface (22) which are connected together;
the outer end of the upper skirting transverse surface (21) is connected with the upper end of the vertical skirting surface (22);
the car wall plate (1) comprises a car wall vertical surface (11) and a car wall lower transverse folding surface (12);
the inner end of the car wall lower transverse folding surface (12) is connected with the lower end of the car wall vertical surface (11);
the lower cross folding surface (12) of the car wall is attached to the upper cross surface (21) of the skirting;
the sealing plate (3) comprises a transverse buckling plate (30) and m upper buckling plates (31), wherein m is a positive integer;
the m upper buckle plates (31) are connected to the upper side of the transverse buckle plate (30);
the sealing plate (3) is buckled to the outer side of the car wall plate (1) to form a silencing air duct;
the transverse buckle plate (30) is buckled with the vertical surface (11) of the car wall to form a main channel (40) of the noise elimination air duct;
the lower end of the transverse buckle plate (30) is hermetically connected with the car wall lower transverse folding surface (12) of the car wall plate (1);
the m upper buckle plates (31) are buckled with the vertical surface (11) of the car wall to form m air inlet channels (41) of the silencing air duct;
the upper buckle plate (31) is provided with a section mutation area;
the section mutation area of each upper buckle plate (31) is buckled with the vertical surface (11) of the car wall to form a resonant cavity (410) of an air inlet channel (41);
the modal frequency of the resonant cavity (410) coincides with a hoistway specific frequency;
a ventilation hole communicated with the noise elimination air duct is formed on the lower transverse folding surface (12) of the car wall and the upper transverse surface (21) of the skirting which are attached together;
the lower end of a skirting vertical surface (22) of the skirting board (2) is used for abutting against the bottom plate of the elevator car.
2. The elevator car wall structure according to claim 1,
the specific frequency of the well is 200 Hz-400 Hz.
3. The elevator car wall structure according to claim 1,
the cross section of the resonant cavity of the air inlet channel (41) is rectangular;
the cross sections of all parts outside the resonant cavity of the air inlet channel (41) are the same rectangle;
the cross-sectional front-to-back length at the resonant cavity (410) is greater than the cross-sectional length everywhere outside the resonant cavity;
the cross-sectional inner and outer widths at the resonant cavity (410) are equal to the cross-sectional inner and outer widths everywhere outside the resonant cavity.
4. The elevator car wall structure according to claim 1,
the resonant cavity (410) is a cuboid;
the length, the width and the height of the resonant cavity (410) are x, y and z respectively;
Figure FDA0004005111240000011
n x is an integer of 1 to 6,n y Is an integer of 1 to 6,n z Is an integer of 1 to 6,c 0 Is the air speed of sound, and f is the hoistway specific frequency.
5. The elevator car wall structure according to claim 1,
the section mutation areas of the upper pinch plates (31) are buckled with the vertical surface (11) of the car wall to form a resonant cavity (410) of a plurality of air inlet channels (41);
the modal frequencies of the resonant cavities (410) of the different air inlet passages (41) coincide with different hoistway-specific frequencies.
6. The elevator car wall structure according to claim 1,
and sound absorption materials (9) are adhered to the air channel side surfaces of the sealing plate (3), the car wall vertical surface (11) or the car wall lower transverse surface (12) which surround the noise elimination air channel outside the resonant cavity (410).
7. The elevator car wall structure according to claim 6,
the sound absorption material (9) adopts sound absorption cotton.
8. The elevator car wall structure according to claim 6,
and sound-absorbing wedges are formed on the non-attaching surface of the sound-absorbing material (9).
9. The elevator car wall structure according to claim 8,
the sound-absorbing wedge is triangular or conical in shape.
10. The elevator car wall structure according to claim 8,
sound-absorbing materials (9) are arranged on two opposite sides of the sound-absorbing air duct outside the resonant cavity (410), and sound-absorbing wedges of the sound-absorbing materials (9) arranged on the two opposite sides are staggered with each other.
11. The elevator car wall structure according to claim 1,
the upper skirting cross surface (21) of the skirting board (2) is used for being buckled with the interior trim buckle plate (6) between the bottom plate of the elevator car;
the ventilation holes are formed on a car wall lower transverse folding surface (12) and a kick upper transverse surface (21) which are attached and installed together between the interior trim buckle plate (6) and the kick vertical surface (22).
12. The elevator car wall structure according to claim 11,
a gap of 0.1-2 mm is formed between the interior gusset plate (6) and the bottom plate of the elevator car.
13. The elevator car wall structure according to claim 1,
the cross section of the skirting board (2) is in a shape like a Chinese character 'ji', and the skirting board is divided into a skirting upper transverse plane (21), a skirting vertical plane (22) and a skirting lower transverse plane (23);
the lower skirting cross surface (23) of the skirting board (2) is abutted against the bottom plate of the elevator car;
the interior trim buckle plate (6) is buckled between the upper transverse surface (21) of the skirting and the lower transverse surface (23) of the skirting;
a gap of 0.1 mm-2 mm is formed between the interior trim buckle plate (6) and the lower transverse surface (23) of the skirting.
14. The elevator car wall structure according to claim 1,
the sum of the effective ventilation areas of the m air inlet channels (41), the effective ventilation area of the main channel (40) and the total area of the ventilation holes are not less than the effective areas specified by national standard, industrial standard or international standard.
15. The elevator car wall structure according to claim 1,
the cross section of the air inlet channel (41) and the vent hole are square or round.
CN202110564431.0A 2021-05-24 2021-05-24 Elevator car wall structure Active CN113247740B (en)

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Publication number Priority date Publication date Assignee Title
EP1726556B1 (en) * 2005-05-25 2010-06-23 Inventio Ag Elevator system comprising a device for noise reduction
CN101481063B (en) * 2008-12-31 2010-06-30 日立电梯（中国）有限公司 Elevator lift-cabin wind-guiding device
CN103332561B (en) * 2013-07-03 2015-12-23 日立电梯(上海)有限公司 Lift car ventilation hole structure
CN105858412A (en) * 2016-06-06 2016-08-17 永大电梯设备（中国）有限公司 Noise-reduction and ventilation structure for lift car of elevator
CN208829075U (en) * 2018-09-29 2019-05-07 海宁市红狮电梯装饰有限公司 A kind of carriage with ventilation sound insulation function

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