CN108861955A - The drawing belt and its belt wheel of elevator device and the elevator for using the drawing belt and belt wheel - Google Patents
The drawing belt and its belt wheel of elevator device and the elevator for using the drawing belt and belt wheel Download PDFInfo
- Publication number
- CN108861955A CN108861955A CN201710328872.4A CN201710328872A CN108861955A CN 108861955 A CN108861955 A CN 108861955A CN 201710328872 A CN201710328872 A CN 201710328872A CN 108861955 A CN108861955 A CN 108861955A
- Authority
- CN
- China
- Prior art keywords
- belt
- drawing belt
- elevator device
- load bearing
- traction sheave
- Prior art date
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000007769 metal material Substances 0.000 claims description 15
- 238000004381 surface treatment Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012876 topography Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/062—Belts
-
- 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
- B66B11/04—Driving gear ; Details thereof, e.g. seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/02—Rope or cable carriers
- B66B15/04—Friction sheaves; "Koepe" pulleys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1207—Checking means
- B66B7/1215—Checking means specially adapted for ropes or cables
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The present invention provides the drawing belt and its belt wheel and using the drawing belt and the elevator of belt wheel of a kind of elevator device.The drawing belt of the elevator device includes：The load bearing unit extended along entire traction strip length；The prewarning unit of load bearing unit extension is parallel to along entire traction strip length, flexible life is lower than the flexible life of load bearing unit；With the clad being wrapped in except load bearing unit and prewarning unit, wherein the drawing belt is in homogeneous thickness band-like, and in the direction of the width with the profile that at least one continuously rises and falls, to form recess portion and protrusion on the side A cooperated with traction sheave and the side B cooperated with directive wheel.The belt wheel includes by traction sheave and directive wheel, and the surface of the traction sheave has two different coefficient of frictions.Pass through the cooperation of the above-mentioned profile continuously to rise and fall, it is therefore prevented that drawing belt passes through axial float when train.
Description
Technical field
The present invention relates to the driving device of elevator device more particularly to hoisting rope for elevator and belt wheel.
Background technique
Drawing belt has been applied to elevator industry for many years, and compared to traditional wirerope draw mode, drawing belt has more
The advantages that long service life, lower noise, lower maintenance cost, compact structure.
It is most commonly seen as drawing belt using flat rubber belting in the elevator device drawing belt of the prior art.In order to avoid in work
Along train axial float, belt pulley is designed on along rotation shaft section in convex crown gear exterior feature, referring to Fig. 8 belt during work
It is shown.Although such design helps to solve the problems, such as the axial float when leash is by train, convex crown shape
Belt wheel causes matched drawing belt to deform in the direction of the width, thereby increases internal stress, reduces making for leash
Use the service life.
To solve the problems, such as the axial float when leash is by train, some elevator devices are using V-ribbed belt as traction
Band, by with as many as wide cooperation multi-wedge belt pulley, can solve the problems, such as belt along train axial float to a certain extent.More wedges
The one side of band has band wedge, and another side is plane.Therefore in actual elevator applications, especially traction ratio is 2:On 1 elevator,
When passing through carriage directive wheel, the side of plane can contact the belt with directive wheel, therefore thoroughly belt can not be avoided along train
The problem of axial float.Although can realize the overturning of belt by an auxiliary device, will increase cost in this way, and drop
The reliability of low system；This problem can also be solved by arrangement train, but this can greatly reduce belt on the traction sheave
Cornerite, and may cause the problem of traction capacity deficiency.
Being disclosed in the information of background parts of the present invention, it is only intended to increase understanding of the overall background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of drawing belt of elevator device and its belt wheels, to solve the elevator of the prior art
In system drawing belt along train axial float the problem of, and deformed in the direction of the width there is no drawing belt.
Specifically, the present invention provides a kind of drawing belt of elevator device, connect and drive lift car and counterweight, wraps
It includes：Load bearing unit, the load bearing unit extend along entire traction strip length；Prewarning unit, the prewarning unit is along entire
Traction strip length is parallel to load bearing unit extension, and flexible life is lower than the flexible life of load bearing unit；And cladding
Layer, the clad are wrapped in except load bearing unit and prewarning unit, wherein the drawing belt is in homogeneous thickness band-like, and
With the profile that at least one continuously rises and falls in width direction, thus in the side A cooperated with traction sheave and the B cooperated with directive wheel
Recess portion and protrusion are formed on side.
In the drawing belt of above-mentioned elevator device according to the present invention, it is preferable that width of the drawing belt in its section
It further include flat segments on direction.
In the drawing belt of above-mentioned elevator device according to the present invention, it is preferable that the load bearing unit is along traction bandwidth
Direction does equidistant or non-equidistant with the fluctuating of drawing belt and arranges, but the central symmetry relative to the section for drawing belt.
In the drawing belt of above-mentioned elevator device according to the present invention, it is preferable that the load bearing unit is by more wirerope
Or more independent rope strand compositions, the more wirerope are identical structure, and every wirerope surrounds wire rope core by more rope strands
Twisting forms；The more independent rope strands are identical structure, and every rope strand is formed by more steel wire twistings.
In the drawing belt of above-mentioned elevator device according to the present invention, it is preferable that the prewarning unit is by rope strand or single
Independent steel wire is constituted, and the rope strand is different from rope strand used in load bearing unit, and the single independent steel wire is different from holding
Steel wire used in carrier unit.
The present invention also provides a kind of belt wheels of elevator device, are used cooperatively with the drawing belt of above-mentioned elevator device, packet
The traction sheave and directive wheel being made of metal material are included, the traction sheave has the drawing belt with the elevator device in the axial direction
The matched profile continuously to rise and fall in the side A, the directive wheel has the side B with the drawing belt of the elevator device in the axial direction
The profile continuously to rise and fall matched.
In the belt wheel of above-mentioned elevator device according to the present invention, it is preferable that there are two types of the surface of the traction sheave at least has
Different coefficient of frictions.It is further preferred that the traction sheave further includes that one or more is embedded into non-metallic material therein
It is embedding cover object, the embedding object that covers of the non-metallic material circumferentially surrounds the traction sheave, constitute traction sheave continuous fluctuating wheel
Wide a part, it is equal or different along axial width, but the central symmetry relative to drawing belt section；Or the traction sheave
Surface further include one or more surface treatment band, the surface treatment band circumferentially surrounds the traction sheave, along axial direction
Width is equal or different, but the central symmetry relative to drawing belt section.
The present invention also provides a kind of elevators comprising the drawing belt of above-mentioned elevator device and above-mentioned elevator device
Belt wheel.
The drawing belt of elevator device of the invention is matched with the belt wheel of elevator device of the invention, and at least have has as follows
The technical effect of benefit：
The cooperation of the profile continuously to rise and fall between the side A of drawing belt by traction sheave and for elevator device, prevents
Drawing belt passes through axial float when traction sheave；And the company between directive wheel and the side B of the drawing belt for elevator device
The cooperation of the continuous profile to rise and fall, it is therefore prevented that drawing belt passes through axial float when directive wheel.By being embedded in one in traction sheave
Or object, or the surface roughness by changing traction sheave local surfaces are covered in the embedding of multiple non-metallic materials, change traction sheave
The coefficient of friction on surface, so that the adjustment or control to tractive force are shown, to meet the different demands to tractive force.
In addition, it is lower than the flexible life of load bearing unit using the flexible life of prewarning unit, it can be in drawing belt
Warning note maintenance or replacement are issued when fatigue damage.
Methods and apparatus of the present invention has additional features and advantages, these characteristics and advantages are attached from what is be incorporated herein
It will be apparent in figure and subsequent specific embodiment, or will be in the attached drawing being incorporated herein and subsequent specific reality
It applies in mode and is stated in detail, the drawings and the detailed description together serve to explain specific principles of the invention.
Detailed description of the invention
Fig. 1 shows the schematic cross-section of an embodiment of the drawing belt of elevator device according to the present invention.
Fig. 2A shows the schematic diagram that the drawing belt of elevator device according to the present invention and traction sheave are used cooperatively.
Fig. 2 B is the sectional view of the traction sheave obtained along the section C-C of Fig. 2A.
Fig. 3 shows the schematic diagram that the drawing belt of elevator device according to the present invention and directive wheel are used cooperatively.
Fig. 4 shows the another embodiment of the drawing belt of elevator device according to the present invention.
Fig. 5 shows the structural schematic diagram of the load bearing unit of the drawing belt of elevator device according to the present invention.
Fig. 6 shows another structural schematic diagram of the load bearing unit of the drawing belt of elevator device according to the present invention.
Fig. 7 A shows the structure of the prewarning unit with strand structure of the drawing belt of elevator device according to the present invention
Schematic diagram.
Fig. 7 B shows the pre- of the structure with single independent steel wire of the drawing belt of elevator device according to the present invention
The structural schematic diagram of alert unit.
Fig. 8 shows the schematic diagram of elevator device leash in the prior art, and wherein the leash of flat rubber belting formula is through excess convexity
Deformation is produced when the belt wheel of crown shape.
Wherein, the label declaration in attached drawing is as follows：
1- drawing belt；2- load bearing unit；3- prewarning unit；4- clad；5- recess portion；The protrusion 6-；7- flat segments；In 8-
The heart；9- traction sheave；The conical surface section of 10- traction sheave；The protrusion of 11- traction sheave；The recessed portion of 12- traction sheave；13- traction
The metal material portion of wheel；14- traction sheave rotation axis；15- directive wheel；The conical surface section of 16- directive wheel；17- directive wheel
Recessed portion；The protrusion of 18- directive wheel；The rotation axis of 19- directive wheel；Object is covered in the embedding of 20- traction sheave；21- wirerope；22-
Rope strand；23- steel wire；24- wire rope core；25- rope strand；26- steel wire；27- steel wire；28- rope strand；29- steel wire；30- steel wire.
It is to be appreciated that attached drawing is not necessarily drawn to scale, it illustrates in a way by the sheet that simplifies
Each feature of the basic principle of invention.Specific design feature of the invention disclosed herein, including for example specific ruler
Very little, orientation, positioning and shape, will partly be determined by the application of specific purpose and use environment.
Specific embodiment
It specific reference will be made to each embodiment of the invention now, show these implementations in the drawings and the following description
The example of example.Although the present invention is combined with exemplary embodiment and is described, it will be understood that this specification is not intended to
Limit the invention to those exemplary embodiments.On the contrary, the present invention is directed to not only cover these exemplary embodiments, and cover
Lid can be included in it is within the spirit and scope of the present invention being defined by the appended claims it is various replacement, modification, etc.
Effect form and other embodiments.
The present invention is specifically described in 2A~Fig. 8 with reference to the accompanying drawing.
Fig. 1 shows a kind of drawing belt 1 of elevator device, connects and drives lift car and counterweight.Drawing belt 1 includes
Load bearing unit 2, the load bearing unit extend along entire 1 length of drawing belt；Prewarning unit 3, the prewarning unit is along entire
1 length of drawing belt is parallel to the extension of load bearing unit 2, and flexible life is lower than the flexible life of load bearing unit 2；And packet
Coating 4, the clad are wrapped in except load bearing unit 2 and prewarning unit 3, wherein the drawing belt 1 is in band in homogeneous thickness
Shape, and in the direction of the width with the profile that at least one continuously rises and falls, thus in the side A and and directive wheel that cooperate with traction sheave
Recess portion 5 and protrusion 6 are formed on the side B of cooperation.
Other than recess portion 5 and protrusion 6, drawing belt 1 can also include flat segments 7 in the width direction in its section, with
Meet specific topology requirement.
Load bearing unit 2 is along 1 width direction of drawing belt as the fluctuating of drawing belt is arranged.It is this to can be equidistant or non-equidistant
From, but it is symmetrical relative to the center in the section for drawing belt 18.It is uniform to thereby ensure that the whole cross section of drawing belt 1 has
Bearing capacity.
Load bearing unit 2 can be made of more 21 or more, wirerope independent rope strands 25.
Fig. 5 shows the load bearing unit 2 being made of wirerope 21.Wirerope 21 is made of rope strand 22 and wire rope core 24, rope strand
22 are centered around around wire rope core 24, are formed by twisting.Fig. 6 shows the load bearing unit 2 being made of independent rope strand 25, by more
Steel wire 26 surrounds 27 twisting of steel wire in core and forms.
The structure of load bearing unit 2 shown in Fig. 5, Fig. 6 is merely illustrative, and the present invention is not limited thereto.Carrying of the invention
Unit 2 can by it is any can satisfy drawing belt 1 needed for the element of bearing capacity be made.
Prewarning unit 3 can be made of rope strand or single independent steel wire, and the rope strand is different from using in load bearing unit 2
Rope strand, the single independent steel wire be different from load bearing unit 2 used in steel wire.
Fig. 7 A shows the structural schematic diagram of the prewarning unit 3 with strand structure, constitute the rope strand 28 of prewarning unit 3 by
More (3 are shown as in figure, but not limited to this) and steel wire 29 (ellipse is shown as in figure, but not limited to this) it constitutes.Fig. 7 B is aobvious
The structural schematic diagram of the prewarning unit 3 of the structure with single independent steel wire 30 is shown.
The structure of prewarning unit 3 shown in Fig. 7 A, Fig. 7 B is merely illustrative, and the present invention is not limited thereto, as long as it is bent
Fatigue life is lower than the flexible life of load bearing unit 2, thus guarantee to generate fatigue fracture prior to load bearing unit 2, into
And guarantee the reliability of drawing belt 1.
The drawing belt 1 of elevator device according to the present invention and the schematic diagram that traction sheave 9 is used cooperatively are shown in Fig. 2A.
Fig. 2A shows that traction sheave 9 has in the axial direction with the side A of the drawing belt 1 of the elevator device matched continuous
The profile of volt.Traction sheave 9 is also embedded into the embedding of non-metallic material therein and covers object 20 with multiple, the non-metallic material it is embedding
It covers object 20 and circumferentially surrounds the traction sheave 9, constitute a part of the continuous topography of traction sheave 9.
Fig. 2 B is the sectional view of the traction sheave obtained along the section C-C of Fig. 2A, and embedding which show non-metallic material is covered
Object 20 is circumferentially around traction sheave 9 and the structure that is embedded.
Object 20 is covered in embedding by non-metallic material, the coefficient of friction of traction sheave 9 can be altered or modified in different parts,
To achieve the purpose that the tractive force that traction sheave 9 is altered or modified.
It should be noted that the control for 9 skin-friction force of traction sheave, it can also be by other methods.For example, not adopting
Embedding with non-metallic material covers object 20, but carries out special surface to the corresponding position of traction sheave 9 and process or handle, thus shape
It is surface-treated band at one or more, changes coefficient of friction from there through the surface roughness for changing 9 local surfaces of traction sheave.
Fig. 3 shows the schematic diagram that the drawing belt 1 of elevator device according to the present invention and directive wheel 15 are used cooperatively.Fig. 3
It has been shown that, directive wheel 15 have the matched profile continuously to rise and fall in the side B with the drawing belt for elevator device in the axial direction.
In use, the profile continuously to rise and fall between the side A of the drawing belt by traction sheave and for elevator device
Cooperation, it is therefore prevented that drawing belt passes through axial float when traction sheave；And the side B of directive wheel and the drawing belt for elevator device
Between the profile continuously to rise and fall cooperation, it is therefore prevented that drawing belt passes through axial float when directive wheel.
Object is covered by being embedded in the embedding of one or more non-metallic materials in traction sheave, or by changing traction sheave part
The surface roughness on surface, changes the coefficient of friction of traction wheel surface, so that the adjustment or control to tractive force are realized, with
Meet the different demands to tractive force.
In addition, it is lower than the flexible life of load bearing unit using the flexible life of prewarning unit, it can be in drawing belt
Warning note maintenance or replacement are issued when fatigue damage.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to the exhaustive present invention, or limits the invention to disclosed precise forms, and it will be apparent that according to the above instruction,
Many changes and variations can be made.The purpose of selecting and describing the exemplary embodiment is that explaining of the invention specific
Principle and its practical application, so that others skilled in the art can be realized and utilize of the invention a variety of different
Exemplary implementation scheme and various chooses and changes.The scope of the present invention be intended to by appended claims and its
Equivalent form is limited.
Claims (10)
1. a kind of drawing belt of elevator device connects and drives lift car and counterweight, which is characterized in that including：
Load bearing unit (2), the load bearing unit extend along entire drawing belt (1) length；
Prewarning unit (3), the prewarning unit are parallel to load bearing unit (2) along entire drawing belt (1) length and extend, bending
Fatigue life is lower than the flexible life of load bearing unit (2)；With
Clad (4), the clad are wrapped in except load bearing unit (2) and prewarning unit (3),
Wherein the drawing belt (1) is in wheel that is in homogeneous thickness band-like, and in the direction of the width there is at least one continuously to rise and fall
Exterior feature, to form recess portion (5) and protrusion (6) on the side A cooperated with traction sheave and the side B cooperated with directive wheel.
2. the drawing belt of elevator device according to claim 1, which is characterized in that the drawing belt (1) is in its section
It further include flat segments (7) in width direction.
3. the drawing belt of elevator device according to claim 1, it is characterised in that：The load bearing unit (2) is along drawing belt
(1) width direction does equidistant or non-equidistant with the fluctuating of drawing belt and arranges, but relative to the section for drawing belt (1)
Central symmetry.
4. the drawing belt of elevator device according to claim 1, it is characterised in that：The load bearing unit (2) is by more steel
Cord or more independent rope strand compositions, the more wirerope are identical structure, and every wirerope is surrounded by more rope strands
Wire rope core twisting forms；The more independent rope strands are identical structure, and every rope strand is formed by more steel wire twistings.
5. the drawing belt of elevator device according to claim 1, it is characterised in that：The prewarning unit (3) by rope strand or
Single independent steel wire is constituted, and the rope strand is different from rope strand used in load bearing unit (2), and the single independent steel wire is not
It is same as steel wire used in load bearing unit (2).
6. a kind of belt wheel of elevator device, is used cooperatively with the drawing belt of elevator device as claimed in claims 1-5, including by
The traction sheave (9) and directive wheel (15) that metal material is constituted, it is characterised in that：The traction sheave (9) has and institute in the axial direction
State the matched profile continuously to rise and fall in the side A of the drawing belt of elevator device, the directive wheel (15) have in the axial direction with it is described
The matched profile continuously to rise and fall in the side B of the drawing belt of elevator device.
7. the belt wheel of elevator device according to claim 6, it is characterised in that：The surface of the traction sheave (9) at least has
There are two types of different coefficient of frictions.
8. the belt wheel of elevator device according to claim 7, it is characterised in that：The traction sheave (9) further include one or
Multiple to be embedded into the embedding of non-metallic material therein and cover object (20), the embedding object (20) that covers of the non-metallic material circumferentially surrounds institute
Traction sheave (9) are stated, a part of the continuous topography of traction sheave (9) is constituted；Object (20) are covered in the embedding of the non-metallic material
It is equal or different along axial width, but the central symmetry relative to drawing belt section.
9. the belt wheel of elevator device according to claim 7, it is characterised in that：The surface of the traction sheave (9) further includes
One or more surface treatment band, the surface treatment band circumferentially surround the traction sheave (9)；The surface treatment band is along axis
To width it is equal or different, but the central symmetry relative to drawing belt section.
10. a kind of elevator, it is characterised in that：Drawing belt including elevator device as claimed in claims 1-5, and such as right
It is required that the belt wheel of elevator device described in 6-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710328872.4A CN108861955B (en) | 2017-05-11 | 2017-05-11 | Traction belt of elevator system and belt pulley thereof, and elevator employing traction belt and belt pulley |
| PCT/EP2018/062235 WO2018206777A1 (en) | 2017-05-11 | 2018-05-11 | A traction belt of elevator system and a pulley thereof, and an elevator with the traction belt and the pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710328872.4A CN108861955B (en) | 2017-05-11 | 2017-05-11 | Traction belt of elevator system and belt pulley thereof, and elevator employing traction belt and belt pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108861955A true CN108861955A (en) | 2018-11-23 |
| CN108861955B CN108861955B (en) | 2024-08-16 |
Family
ID=62167317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710328872.4A Active CN108861955B (en) | 2017-05-11 | 2017-05-11 | Traction belt of elevator system and belt pulley thereof, and elevator employing traction belt and belt pulley |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108861955B (en) |
| WO (1) | WO2018206777A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111824907A (en) * | 2019-04-15 | 2020-10-27 | 康蒂泰克驱动系统有限公司 | Tension belt or sling |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466989B (en) * | 2018-12-29 | 2021-01-22 | 江苏兴华胶带股份有限公司 | Carbon fiber reinforced cold-resistant and flame-retardant balance compensation chain for manned high-speed elevator |
| US11999590B2 (en) | 2022-01-03 | 2024-06-04 | Otis Elevator Company | Modular elevator sheave assembly |
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2017
- 2017-05-11 CN CN201710328872.4A patent/CN108861955B/en active Active
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2018
- 2018-05-11 WO PCT/EP2018/062235 patent/WO2018206777A1/en active Application Filing
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| CN111824907A (en) * | 2019-04-15 | 2020-10-27 | 康蒂泰克驱动系统有限公司 | Tension belt or sling |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018206777A1 (en) | 2018-11-15 |
| CN108861955B (en) | 2024-08-16 |
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