CN108483197A - A kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator - Google Patents
A kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator Download PDFInfo
- Publication number
- CN108483197A CN108483197A CN201810493001.2A CN201810493001A CN108483197A CN 108483197 A CN108483197 A CN 108483197A CN 201810493001 A CN201810493001 A CN 201810493001A CN 108483197 A CN108483197 A CN 108483197A
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- China
- Prior art keywords
- damping
- connector
- vibration damper
- car
- damping actuator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B66B11/028—Active systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Abstract
The invention discloses a kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator,Mainly by rolling guide shoe system,Car and car frame system composition,Car frame system provides one to car and supports and fixed effect,Make car in different load-carryings and high-speed cruising,Center of gravity is always positioned at the plane of guide rail,When elevator vibrates,Damping actuator can react rapidly,Collect pressure information,After the processing of other vibration factors,A feedback is generated in the current excitation of coil,Thus coil generates induced field,Magnetorheological fluid is chosen as damping element,Under the action of the magnetic field,The magnetic-particle of distribution at random connects into present situation substance originally in magnetorheological fluid,Flow through damping hole,Larger damping force is provided,The connector of connection idler wheel is driven to do small rotation around the tie point of itself and pedestal,Change the pressure between idler wheel and guide rail,Thus achieve the purpose that the uncertain active damping according to vibration.
Description
Technical field
The present invention relates to the research of express elevator and design fields, specifically provide a kind of based on electromagnetic damping start
The vibration damper for high-speed elevator cage of device.
Background technology
Today's society, land resource is more and more barrenr, and population is also more and more, and building is all sent out toward higher and higher direction
Exhibition, it is corresponding, it is the exploitation and design of express elevator.However, speeding with elevator speed, vibration of elevator is brought
Influence it is also more and more of interest by people.Vibration of elevator can not only influence the comfort level that passenger takes elevator, and degree of safety can also
Increase the energy consumption of elevator, it is more serious to cause huge destruction to the relevant device of elevator interior system.Therefore, how
Its vibration and noise are controlled in the design and producing of express elevator product, are a highly important job.
In practical study in terms of present elevator vibration damping, typically shaking for elevator is studied in a manner of controlling a variable
It is dynamic, it is exactly influenced according to caused by different factors, targetedly designs vibration damping scheme.It is more in traditional vibration damping scheme
The mode of passive vibration damping is taken, for example adds the methods of spring or rubber damping block, however rubber absorbers high temperature resistant low temperature
Ability and resistance to poor by sexuality and easy to aging in air, spring can transmit vibration in high frequency, easy to produce and wave fortune
It is dynamic.Prior, the similar passive oscillation damping method of both has its limitation more, cannot according to the uncertainty of vibration, into
Row is effective to be adjusted, and under high speed, effectiveness in vibration suppression is worse.
Invention content
The purpose of the present invention is to provide a kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator, including rolling guide shoe system, car and
Car frame system, the car frame system are arranged outside car, and car frame system main task is to provide support surely for car
Gu effect, the rolling guide shoe system are fixed on by connector in car frame system.
As improvement：The car frame system is mainly made of upper beam, column, underbeam, brace and curb girder；The upper beam
It is provided with column at left and right sides of bottom, column bottom is provided with underbeam, and side is provided with curb girder before and after underbeam；The brace both ends
It is connect respectively with column and curb girder；Car frame system provides support and fixed effect to car, when car is in different load-carryings
When, car frame system can ensure that the center of gravity of car is located at the plane of guide rail；In addition, the length of sedan-chair frame also has an impact vibration,
Sedan-chair frame is longer, and the distance of upper and lower guide shoe is bigger, and effectiveness in vibration suppression is better；It will cause to increase the pressure of guide rail in centre-of gravity shift
Add, vibration is caused to aggravate, the load suffered by sedan-chair frame bottom is transmitted to sedan-chair frame, to achieve the effect that vibration damping by brace.
As being further improved：The rolling guide shoe system is by upper cover plate, idler wheel, damping actuator, pedestal and I-shaped saddle
Composition；Be fixedly connected with upper cover plate at the top of the pedestal, base bottom is fixedly connected with I-shaped saddle, I-shaped saddle by connector with
Column is fixedly connected；It is rotatably connected to connector at left and right sides of the base interior, idler wheel is rotatably connected at the top of connector, even
Damping actuator is fixedly connected in the middle part of fitting side, the damping actuator other end is connect with pedestal；When elevator vibrates,
With guide rail relative motion occurs for rolling guide shoe system, and damping actuator can react rapidly, adjust the size of damping force, the company of drive
The connector for connecing idler wheel does small rotation around the tie point of itself and pedestal, changes the pressure between idler wheel and guide rail, thus reaches
The purpose of vibration damping.
As being further improved：The damping actuator by front connector, spring, drive end bearing bracket, working cylinder, rear end cap, after
Cylinder, piston rod, piston, coil, damping hole and outer shell composition；The front connector is connect with pedestal, rear thick stick by connector with
Idler wheel connects；Rear end cap is fixedly connected with after described on the left of thick stick, is provided with drive end bearing bracket on the left of rear end cap, rear end cap and drive end bearing bracket it
Between be provided with working cylinder, rear end cap is provided centrally with outer shell, and outer shell left end is connected with piston, and piston left end is connected with piston rod,
Piston rod left end is slidably connected with front connector；The piston outside is provided with spring, spring left end and front connector right side
Face is fixedly connected, and spring right end is fixedly connected with drive end bearing bracket left side；The piston is circumferentially connected with several damping holes, internal piston
It is circumferentially provided with several coils；When car moves, and idler wheel is relatively moved with guide rail, damping actuator collects pressure letter
Breath feeds back to damping actuator, damping actuator receives signal can be rapid together with other vibration factors by controller
It makes a response and gives coil one current excitation, so that it is generated induced field, the magnetorheological fluid as damping element is magnetized,
So that its internal structure is changed, generate required damping force, to achieve the effect that vibration damping.
As being further improved：The column side is provided with guide rail.
As being further improved：The quantity of the rolling guide shoe system is four and is symmetrically distributed in column both sides two-by-two,
It is pressed on guide rail at 90 degree there are three idler wheel in each rolling guide shoe system.
As being further improved：The idler wheel is driven by traction motor.
As being further improved：Magnetorheological fluid is filled with inside the working cylinder.
Compared with the prior art, the advantages of the present invention are as follows：
Car frame system provides a support and fixed effect to car, and car is made to be transported in different load-carryings and high speed
When row, center of gravity is always positioned at the plane of guide rail, and under the driving of motor, rolling guide shoe system does rolling movement, band along guide rail
Dynamic car movement and stopping；When elevator vibrates, with guide rail relative motion occurs for rolling guide shoe system, damps actuator energy
Enough rapid reactions, collect pressure information, and after the processing of other vibration factors, the electric current for generating a feedback in coil swashs
It encourages, thus coil generates induced field, choose magnetorheological fluid as damping element, under the action of the magnetic field, in magnetorheological fluid
Originally the magnetic-particle of distribution at random connects into present situation substance, flows through damping hole, provides larger damping force, drives connection idler wheel
Connector do small rotation around the tie point of itself and pedestal, change the pressure between idler wheel and guide rail, thus reach according to shaking
The purpose of dynamic uncertain active damping so that elevator can according to vibration uncertainty effectively adjust, overcome spring or
It the limitation of the passive oscillation damping method such as rubber damping and remains to normally and efficiently work at high speeds.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail：
Fig. 1 is a kind of structural schematic diagram of the vibration damper for high-speed elevator cage based on electromagnetic damping actuator；
Fig. 2 is a kind of knot of the rolling guide shoe system in vibration damper for high-speed elevator cage based on electromagnetic damping actuator
Structure schematic diagram；
Fig. 3 is the electromagnetic damping actuator in a kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator
Structural schematic diagram；
Fig. 4 is a kind of main view of the car frame system in vibration damper for high-speed elevator cage based on electromagnetic damping actuator
Figure；
Fig. 5 is a kind of vertical view of the car frame system in vibration damper for high-speed elevator cage based on electromagnetic damping actuator
Figure.
In figure：1- rolling guide shoes system, 2- cars, 3- car frames system, 4- upper cover plates, 5- idler wheels, 6- damping actuator,
Cylinder, 15- after 7- pedestals, 8- I-shaped saddles, 9- front connectors, 10- springs, 11- drive end bearing brackets, 12- working cylinders, 13- rear end caps, 14-
Piston rod, 16- pistons, 17- coils, 18- damping holes, 19- outer shells, 20- upper beams, 21- columns, 22- underbeams, 23- braces,
24- curb girders.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~5, in the embodiment of the present invention, a kind of high-speed elevator cage vibration damping based on electromagnetic damping actuator
Device, including rolling guide shoe system 1, car 2 and car frame system 3, the car frame system 3 is arranged outside car 2, described
Rolling guide shoe system 1 is fixed on by connector in car frame system 3.
21 side of the column is provided with guide rail.
The car frame system 3 is mainly made of upper beam 20, column 21, underbeam 22, brace 23 and curb girder 24；On described
It is provided with column 21 at left and right sides of 20 bottom of beam, 21 bottom of column is provided with underbeam 22, and side is provided with curb girder 24 before and after underbeam 22；
23 both ends of the brace are connect with column 21 and curb girder 24 respectively；In the elevator of high-speed cruising, the offset of center of gravity will be led
Cause increases the pressure of guide rail, and vibration is caused to aggravate, and car frame system 3 provides a support and fixed effect to car 2, makes
For car 2 in different load-carryings and high-speed cruising, center of gravity is always positioned at the plane of guide rail；In addition, the length of car frame system 3
Also have an impact to vibration, sedan-chair frame is longer, scrolls up and down the distance of guide shoe system 1 and can also increase, excellent to car frame system 3 based on this
Change, effectiveness in vibration suppression can be made more preferably.
The rolling guide shoe system 1 is made of upper cover plate 4, idler wheel 5, damping actuator 6, pedestal 7 and I-shaped saddle 8；It is described
7 top of pedestal is fixedly connected with upper cover plate 4, and 7 bottom of pedestal is fixedly connected with I-shaped saddle 8, and I-shaped saddle 8 passes through connector and column
21 are fixedly connected；The 7 inside left and right sides of the pedestal is rotatably connected to connector, is rotatably connected to idler wheel 5 at the top of connector, even
Damping actuator 6 is fixedly connected in the middle part of fitting side, damping 6 other end of actuator is connect with pedestal 7；When elevator vibrates
When, with guide rail relative motion occurs for rolling guide shoe system 1, and damping actuator 6 can react rapidly, adjust the size of damping force,
It drives the connector of connection idler wheel 5 to do small rotation around the tie point of itself and pedestal 7, changes the pressure between idler wheel 5 and guide rail,
Thus achieve the purpose that vibration damping.
The damping actuator 6 by front connector 9, spring 10, drive end bearing bracket 11, working cylinder 12, rear end cap 13, rear cylinder 14,
Piston rod 15, piston 16, coil 17, damping hole 18 and outer shell 19 form；The front connector 9 is connect with pedestal 7, and rear thick stick 14 is logical
Connector is crossed to connect with idler wheel 5；14 left side of thick stick is fixedly connected with rear end cap 13 after described, and 13 left side of rear end cap is provided with drive end bearing bracket
11, working cylinder 12 is provided between rear end cap 13 and drive end bearing bracket 11, rear end cap 13 is provided centrally with outer shell 19, and 19 left end of outer shell connects
It is connected to piston 16,16 left end of piston is connected with piston rod 15, and 15 left end of piston rod is slidably connected with front connector 9；The piston
15 outside is provided with spring 10, and 10 left end of spring is fixedly connected with 9 right side of front connector, 10 right end of spring and drive end bearing bracket 11
Left side is fixedly connected；The piston 16 is circumferential to be connected with several damping holes 18, and 16 internal circumferential of piston is provided with several coils 17；
Damping actuator 6 can collect pressure information when acting on, and after the processing of other vibration factors, generate a feedback in coil
Thus 17 current excitation, coil 17 generate induced field, selection magnetorheological fluid is as damping element, the effect in the magnetic field
Under, the magnetic-particle of distribution at random connects into present situation substance originally in magnetorheological fluid, flows through damping hole 18, provides larger damping
Power achievees the purpose that the uncertain active damping according to vibration.
The quantity of the rolling guide shoe system 1 is four and is symmetrically distributed in 21 both sides of column, each rolling guide shoe two-by-two
It is pressed on guide rail at 90 degree there are three idler wheel 5 in system 1.
The idler wheel 5 is driven by traction motor.
12 inside of the working cylinder is filled with magnetorheological fluid.
The present invention operation principle be：
In the elevator of high-speed cruising, the offset of center of gravity will cause to increase the pressure of guide rail, and vibration is caused to aggravate.Sedan-chair
Compartment frame system 3 provides a support and fixed effect to car 2, makes car 2 in different load-carryings and high-speed cruising, weight
The heart is always positioned at the plane of guide rail, and under the driving of motor, rolling guide shoe system 1 does rolling movement along guide rail, drives car 2
Movement and stopping；When elevator vibrates, with guide rail relative motion occurs for rolling guide shoe system 1, and damping actuator 6 can be fast
Speed reaction, collects pressure information, and after the processing of other vibration factors, the electric current for generating a feedback in coil 17 swashs
It encourages, thus coil 17 generates induced field, choose magnetorheological fluid as damping element, under the action of the magnetic field, magnetorheological fluid
The magnetic-particle of middle script distribution at random connects into present situation substance, flows through damping hole 18, provides larger damping force, drives connection
The connector of idler wheel 5 does small rotation around the tie point of itself and pedestal 7, changes the pressure between idler wheel 5 and guide rail, thus reaches
According to the purpose of the uncertain active damping of vibration.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (8)
1. a kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator, including rolling guide shoe system (1), car
(2) and car frame system (3), which is characterized in that car frame system (3) setting is external in car (2), the rolling guide shoe
System (1) is fixed on by connector in car frame system (3).
2. the vibration damper for high-speed elevator cage according to claim 1 based on electromagnetic damping actuator, it is characterised in that：Institute
Car frame system (3) is stated mainly to be made of upper beam (20), column (21), underbeam (22), brace (23) and curb girder (24)；It is described
It is provided with column (21) at left and right sides of upper beam (20) bottom, column (21) bottom is provided with underbeam (22), side before and after underbeam (22)
It is provided with curb girder (24)；Brace (23) both ends are connect with column (21) and curb girder (24) respectively.
3. the vibration damper for high-speed elevator cage according to claim 1 based on electromagnetic damping actuator, it is characterised in that：Institute
Rolling guide shoe system (1) is stated to be made of upper cover plate (4), idler wheel (5), damping actuator (6), pedestal (7) and I-shaped saddle (8)；Institute
It states and is fixedly connected with upper cover plate (4) at the top of pedestal (7), pedestal (7) bottom is fixedly connected with I-shaped saddle (8), and I-shaped saddle (8) passes through
Connector is fixedly connected with column (21)；The internal left and right sides of the pedestal (7) is rotatably connected to connector, turns at the top of connector
It is dynamic to be connected with idler wheel (5), it is fixedly connected with damping actuator (6) in the middle part of connector side, damps actuator (6) other end and base
Seat (7) connection.
4. the vibration damper for high-speed elevator cage according to claim 3 based on electromagnetic damping actuator, it is characterised in that：Institute
Damping actuator (6) is stated by front connector (9), spring (10), drive end bearing bracket (11), working cylinder (12), rear end cap (13), rear cylinder
(14), piston rod (15), piston (16), coil (17), damping hole (18) and outer shell (19) composition；The front connector (9) with
Pedestal (7) connects, and rear thick stick (14) is connect by connector with idler wheel (5)；After described rear end cap is fixedly connected on the left of thick stick (14)
(13), it is provided with drive end bearing bracket (11) on the left of rear end cap (13), working cylinder is provided between rear end cap (13) and drive end bearing bracket (11)
(12), rear end cap (13) is provided centrally with outer shell (19), and outer shell (19) left end is connected with piston (16), the connection of piston (16) left end
There are piston rod (15), piston rod (15) left end to be slidably connected with front connector (9)；The piston should be provided with spring on the outside of (15)
(10), spring (10) left end is fixedly connected with front connector (9) right side, and spring (10) right end and drive end bearing bracket (11) left side are solid
Fixed connection；The piston (16) is circumferentially connected with several damping holes (18), and piston (16) internal circumferential is provided with several coils (17).
5. the vibration damper for high-speed elevator cage according to claim 2 based on electromagnetic damping actuator, it is characterised in that：Institute
It states column (21) side and is provided with guide rail.
6. the vibration damper for high-speed elevator cage according to claim 1 based on electromagnetic damping actuator, it is characterised in that：Institute
The quantity for stating rolling guide shoe system (1) is four and is symmetrically distributed in column (21) both sides, each rolling guide shoe system (1) two-by-two
It is upper to be pressed on guide rail at 90 degree there are three idler wheel (5).
7. the vibration damper for high-speed elevator cage according to claim 3 based on electromagnetic damping actuator, it is characterised in that：Institute
Idler wheel (5) is stated to drive by traction motor.
8. the vibration damper for high-speed elevator cage according to claim 4 based on electromagnetic damping actuator, it is characterised in that：Institute
It states and is filled with magnetorheological fluid inside working cylinder (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493001.2A CN108483197A (en) | 2018-05-22 | 2018-05-22 | A kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493001.2A CN108483197A (en) | 2018-05-22 | 2018-05-22 | A kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108483197A true CN108483197A (en) | 2018-09-04 |
Family
ID=63351590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810493001.2A Pending CN108483197A (en) | 2018-05-22 | 2018-05-22 | A kind of vibration damper for high-speed elevator cage based on electromagnetic damping actuator |
Country Status (1)
| Country | Link |
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| CN (1) | CN108483197A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573778A (en) * | 2019-01-02 | 2019-04-05 | 广州广日电梯工业有限公司 | A kind of magnetorheological buffer of elevator and control method |
| CN113800355A (en) * | 2021-09-23 | 2021-12-17 | 黄沛 | Elevator operation balance real-time adjusting device |
| CN114604705A (en) * | 2022-03-13 | 2022-06-10 | 杭州奥立达电梯有限公司 | Damping balancing equipment for elevator power system |
| CN116119487A (en) * | 2023-02-27 | 2023-05-16 | 东台创跃机电有限公司 | Anti-deformation guide shoe based on elevator car guide shoe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203889835U (en) * | 2014-06-12 | 2014-10-22 | 常熟理工学院 | Elevator guide shoe with driving vibration reduction function |
| CN206126554U (en) * | 2016-06-25 | 2017-04-26 | 西继迅达（许昌）电梯有限公司 | Elevator car's guider |
| CN206874741U (en) * | 2017-07-09 | 2018-01-12 | 华东交通大学 | A kind of valve-regulated MR damper |
-
2018
- 2018-05-22 CN CN201810493001.2A patent/CN108483197A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203889835U (en) * | 2014-06-12 | 2014-10-22 | 常熟理工学院 | Elevator guide shoe with driving vibration reduction function |
| CN206126554U (en) * | 2016-06-25 | 2017-04-26 | 西继迅达（许昌）电梯有限公司 | Elevator car's guider |
| CN206874741U (en) * | 2017-07-09 | 2018-01-12 | 华东交通大学 | A kind of valve-regulated MR damper |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573778A (en) * | 2019-01-02 | 2019-04-05 | 广州广日电梯工业有限公司 | A kind of magnetorheological buffer of elevator and control method |
| CN109573778B (en) * | 2019-01-02 | 2023-12-22 | 广州广日电梯工业有限公司 | Magneto-rheological elevator buffer and control method |
| CN113800355A (en) * | 2021-09-23 | 2021-12-17 | 黄沛 | Elevator operation balance real-time adjusting device |
| CN114604705A (en) * | 2022-03-13 | 2022-06-10 | 杭州奥立达电梯有限公司 | Damping balancing equipment for elevator power system |
| CN114604705B (en) * | 2022-03-13 | 2023-08-22 | 杭州奥立达电梯有限公司 | Damping balance equipment for elevator power system |
| CN116119487A (en) * | 2023-02-27 | 2023-05-16 | 东台创跃机电有限公司 | Anti-deformation guide shoe based on elevator car guide shoe |
| CN116119487B (en) * | 2023-02-27 | 2024-03-19 | 宁波翔润机械制造有限公司 | Anti-deformation guide shoe based on elevator car guide shoe |
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