CN102482059A - Elevator system having a counterweight - Google Patents
Elevator system having a counterweight Download PDFInfo
- Publication number
- CN102482059A CN102482059A CN2010800391931A CN201080039193A CN102482059A CN 102482059 A CN102482059 A CN 102482059A CN 2010800391931 A CN2010800391931 A CN 2010800391931A CN 201080039193 A CN201080039193 A CN 201080039193A CN 102482059 A CN102482059 A CN 102482059A
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- CN
- China
- Prior art keywords
- counterweight
- segmentation
- lift facility
- guide rail
- lift
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
Abstract
The invention relates to a counterweight (2) and an elevator system (10) having at least one counterweight (2). The counterweight (2) is constructed as a frameless counterweight and comprises a plurality of counterweight segments (2.1, 2.2), wherein the counterweight segments (2.1, 2.2) are disposed vertically in series one below the other in the installed state. A first top counterweight segment (2.1) thereby supports a second subsequent counterweight segment (2.2). A first connecting means (4.1) is provided on the bottom (3.1) of the first top counterweight segment (2.1) and a second connecting means (4.2) is provided on the top side (3.2) of the second subsequent counterweight segment (2.2), so that the second subsequent counterweight segment (2.2) can be mounted on the first top weight segment (2.1) by connecting the first and second connecting means (4.1, 4.2).
Description
Technical field
The present invention relates to a kind of lift facility, lift car and to focusing in the lift well each other oppositely motion in this lift facility the invention still further relates to a kind of corresponding counterweight.
Background technology
Usually make every effort to when design or design lift facility, realize that higher efficient or personnel are or/and the goods conveyance.Important for this reason factor is, utilizes the cross-sectional plane of lift well best.
This mainly can realize that through the design long and narrow as far as possible and that save the space of counterweight wherein, if counterweight needs less space, then lift car can correspondingly be implemented more in large area on its cross-sectional plane.
Common counterweight typically comprises counterweight framework and a plurality of to pouring weight, and they are inserted in the counterweight framework, in order to produce required counterweight quality.The shortcoming of such counterweight is the counterweight framework that volume is big and heavy, and it usually only can place lift well with bigger expending.With packaged year counterweight framework of counterweight also usually is difficult.The space that this in addition mode is need be in vertical shaft relatively large.
German laid-open document DE1162048 discloses a kind of first counterweight of the vertical shaft transportation device that is used to dig up mine, and wherein a plurality of tabular counterweight elements are suspended between upper frame and the lower section frame with holding up.Said framework links to each other through two pegs.The branch of a plurality of beam shapes is to being bonded into counterweight under middle connection that focuses on the interval holding element in second kind of embodiment of this open source literature.Here also on top and bottom framework is set, they link to each other through two pegs.
But in this open source literature, only relate to equilibrium of pressure and flow characteristic in the vertical shaft.The vertical shaft utilization of optimizing as far as possible and the installation aspect of operability problem and counterweight are all inessential.
From following document, disclose frameless counterweight, they are along rail guidance:
-JP?10250959
-JP?56116371
-RU?2138033。
Document JP 10250959 is regarded as immediate prior art.
Summary of the invention
The objective of the invention is to, eliminate according to the said shortcoming of the lift facility of prior art and propose a kind of counterweight, it is aspect its size design but also optimised aspect its weight and other characteristic.
Particularly relate to propose a kind of flat configuration as far as possible to weight structure, so that can use the major part of shaft area for transporting purpose.This counterweight should be realized more shirtsleeve operation and expend installation still less in addition.
The solution of this purpose is to improve according to the present invention counterweight.The present invention has realized the structure new and that optimize of counterweight and guiding device thereof.
Counterweight according to the present invention is configured to frameless counterweight and comprises a plurality of counterweight segmentations.These counterweight segmentations are vertically mutual hangingly install in series up and down under mounted state.At least one the back to back second counterweight segmentation of the first counterweight segment bearing on top.On the bottom surface of the first counterweight segmentation on top, first connection structure is set and second bindiny mechanism is set on the bottom surface of the back to back second counterweight segmentation; Second bindiny mechanism makes the back to back second counterweight segmentation be connected with the first counterweight segmentation ordinatedly such as profile through the combination of first and second connection structures such as complementally implementing with first bindiny mechanism thus.
These counterweight segmentations are implemented from carrying ground, this means, see that from bottom to top nethermost counterweight segmentation is suspended in the counterweight segmentation that is close on it.This counterweight segmentation is suspended on again in the counterweight segmentation that is close on it, and the rest may be inferred.Such layout has realized abandoning the counterweight framework.Therefore according to the structure of counterweight of the present invention be modular, carry certainly and frameless.
A kind of embodiment is preferred especially, and wherein, these counterweight segmentations are made integratedly.Here adopt notion " integratedly ", need not other member (such as framework) or installation elements (such as hawser), in order to counterweight segmentation successively install in series hangingly in order to explanation.This notion is stressed in addition, and the counterweight segmentation is preferably processed by unique a kind of material (piece).
Both can in the lift facility that only has a counterweight, realize according to counterweight of the present invention, also can in having the lift facility of a plurality of counterweights, realize.
This lift facility so designs according to the present invention, and it comprises the guide rail that is used to guide counterweight, and wherein, guide rail is arranged in the lift well vertically.Guide between the guide rail and maintenance focusing on according to of the present invention.
Realized advantage according to the present invention:
-realized than the more flat and wideer counterweight design of the counterweight with framework through frameless make;
The total structure of-counterweight is fairly simple also relatively more cheap;
The total structure volume ratio of-counterweight is less;
-install fairly simple and only need space less in the lift well;
The segmentation of-counterweight is born pulling force all the time through the layout of suspension side by side, and this causes occurring less noise.
Other advantage provides from the description of specification sheets.
Form the characteristic of dependent claims according to other or favourable design of lift facility of the present invention.
Description of drawings
Sign property and exemplarily describe the present invention in detail with reference to the accompanying drawings.These accompanying drawings are described explicitly and briefly.Identical Reference numeral is represented identical member, is had the identical or similar member of Reference numeral presentation function of different small tenons.Wherein:
Fig. 1 shows the schematic cross sectional views of lift facility;
Fig. 2 shows the front elevation according to first counterweight of the present invention;
Fig. 3 shows the front elevation according to second counterweight of the present invention;
Fig. 4 show according to the horizontal cross of counterweight of the present invention and
Fig. 5 shows the horizontal cross according to another counterweight of the present invention.
The specific embodiment
Fig. 1 has schematically shown the lift facility consistent with prior art 10.Can be in this lift facility 10 such as utilization the present invention.Set forth the critical elements of this lift facility 10 by this accompanying drawing.Lift facility 10 comprises lift car 1 in an example shown, and it is connected with counterweight 2 through load carrier 5.In the upper shaft zone, corresponding driving mechanism and reverse wheel can be set, as in Fig. 1, illustrating by two pulleys 7 and 8.Other elements of lift car 1, counterweight 2 and lift facility 10 and the layout of parts and design are to make lift car 1 in lift well 3, to go.Lift car 1 oppositely moves with counterweight 2 each other in addition.
According to the present invention shown in lift facility 10 in, or in another lift facility 10, adopt frameless counterweight 2, it comprises a plurality of counterweight segmentations 2.1,2.2, as among Fig. 2 by shown in first embodiment.Counterweight segmentation 2.1,2.2 is arranged up and down under the state that assembles.The back to back second counterweight segmentation 2.2 is carried in the first counterweight segmentation 2.1 on top here.Structure 4 is integrated and connected in counterweight segmentation 2.1,2.2.On the bottom surface 3.1 of the first counterweight segmentation 2.1 on top, first bindiny mechanism 4.1 is set.Being connected with dovetail bonded assembly form between the counterweight segmentation here 2.1 and 2.2 implemented.Therefore the counterweight segmentation 2.1 on top has the groove 4.1 of dovetail form on bottom surface 3.1, and second bindiny mechanism 4.2 is set on the end face 3.2 of the back to back second counterweight segmentation 2.2, and itself and first bindiny mechanism 4.1 complementally implement.Second bindiny mechanism 4.2 is the tailgate 4.2 of dovetail form here.Can the back to back second counterweight segmentation 2.2 be connected with the counterweight segmentation 2.1 on top through first and second bindiny mechanisms 4.1,4.2 and mould assembly face ordinatedly through this type of attachment.
Here adopt notion " integrated ", realized the connection of counterweight segmentation 2.1,2.2 or the like in order to explanation bindiny mechanism 4 through its moulding.
The embodiment of corresponding bindiny mechanism 4 is:
-each back to back counterweight segmentation 2.n can be fixed on the bottom surface 3.n-1 of position counterweight segmentation 2.n-1 on it with its end face 3.n profile ordinatedly;
-bindiny mechanism complementally implements, in order to the mutual interlocking that realizes that profile cooperates;
-counterweight segmentation 2.1,2.2 or the like can be at the scene, promptly interconnect in the place of erection;
-bindiny mechanism is integrated in counterweight segmentation 2.1,2.2 or the like.
In description so far, named the dovetail connection.But the connection that the or/no type face that also has other profile cooperation in a large number cooperates, they satisfy aforesaid standard.Replacing dovetail to connect can be such as the principle that adopts drawer, and wherein, the counterweight segmentation on top has guide rail and back to back counterweight segmentation has slide guiding device or roller on end face on the bottom surface, and they slide or roll along guide rail.Implement to be connected the principle that can adopt hingen for counterweight segmentation with back to back counterweight segmentation in the modification at another kind with top; The counterweight segmentation of its middle and upper part has pin on the longitudinal edge of dorsad, level, hoistway wall one side of bottom surface, eyelet on the end face of back to back counterweight segmentation and said pin coupling and form hinge.In this case, on the longitudinal edge front side, level of bottom surface, be provided with can from vertical shaft approaching pull handle lock, can two adjacent counterweight segmentations releasably be connected by it.
Corresponding bindiny mechanism 4 preferably is embodied as, and it satisfies one or more standards extraly:
-this connection is releasable, so that can separate counterweight segmentation 2.1,2.2 or the like (such as in order to change the counterweight segmentation of damage, perhaps in order to improve total weight) when needed;
-this connection is from insurance, in order to prevent that counterweight segmentation 2.1,2.2 slips off each other or separates after connecting;
-this connection is noise abatement, in order to reduce through the mutual kinetic noise of counterweight segmentation 2.1,2.2 or the like one by one.
According to the present invention, as shown in Figure 2, adopt the guide rail 9 of two sidepieces to be used for guiding vertically according to counterweight 2 of the present invention.This guide rail 9 is here on the one hand as in lift well 3, vertically guiding counterweight 2.It is as measures, in order to prevent that counterweight segmentation 2.1,2.2 or the like slips off each other or separates after connecting on the other hand.
When adopting dovetail to connect, as shown in Figure 2, counterweight segmentation 2.1,2.2 or the like is interconnected or is separated from each other through the motion of pointing to perpendicular to the drawing plane of Fig. 2 (also referring to the arrow P among Fig. 5).Guide rail 9 has U-shaped shape (referring to Fig. 4) and bag is stung the lateral edges (the vertical edge of sidepiece) of counterweight segmentation 2.1,2.2 or the like.Can't again counterweight segmentation 2.1,2.2 or the like be separated from each other thus.
Preferably guide rail 9 is designed to, such as in the lower shaft zone, during lift car 1 superposed vertical shaft zone, a shank of the U-shaped profile of guide rail 9 is removed maybe and can be removed for this reason.
The horizontal profile of in Fig. 5, having showed the counterweight that passes corresponding lift facility 10.Visible in Fig. 5, guide rail 9 replaces the U-shaped profile to have L shaped profile in the vertical shaft zone of bottom.This layout has realized after such as the first counterweight segmentation 2.1 of installation, counterweight segmentation 2.2 being advanced on direction of arrow P.
The different fixed mechanisms 6 (referring to such as Fig. 2) that are used to that load carrier 5 is installed or are used to install counterweight reverse wheel (not shown) of directly in the counterweight segmentation 2.1 on top, installing according to embodiment.
Connecting panel 11 is set in another preferred embodiment, and it is as the uppermost segmentation of counterweight 2, as shown in Fig. 3.The fixed mechanism 6 (referring to such as Fig. 3) that is used to that load carrier 5 is installed or is used to install counterweight reverse wheel (not shown) is installed again on connecting panel 11.
Characteristics according to the embodiment of Fig. 3 are that it comprises more than two counterweight segmentations 2.1 and 2.2.Here counterweight 2 has three counterweight segmentations 2.1,2.2,2.3 altogether.Above uppermost counterweight segmentation 2.1, have the connecting panel of mentioning 11, it is optional.Below can arrange the optional connecting panel 12 that is used to install counterweight buffer 13.
Here counterweight 2 is also combined by counterweight segmentation 2.1,2.2., 2.3, and they are in series arranged up and down under the state that assembles each other.This counterweight 2 can comprise the connecting panel of mentioning 11 and/or 12 in addition.
Connecting panel 11 and/or 12 has corresponding bindiny mechanism 4, in order to realize suspension one by one.Bindiny mechanism 4 is embodied as, and it provides with the profile of the bindiny mechanism 4 of counterweight segmentation 2.1,2.2 or the like cooperates and is connected 4.
Here adopt notion " install in series each other ", be used to explain counterweight segmentation 2.1,2.2,2.3, the mutual arow layout of 2.n.This means that the back to back second counterweight segmentation 2.2 is suspended in the first counterweight segmentation 2.1 on top.If adopt more than two counterweight segmentations (referring to such as Fig. 3), then back to back another the 3rd counterweight segmentation 2.3 is suspended in the second counterweight segmentation 2.2 on top or the like.
A kind of method that is used on lift facility 10, installing counterweight 2 is described below.This method comprises the following steps:
-lift facility 10 is transferred in the predefined position, lift car 1 and the counterweight 2 that needs to install are arranged in definite vertical shaft zone (being positioned at the vertical shaft zone of bottom such as lift car superposed vertical shaft zone and counterweight) in this position;
-the first counterweight segmentation 2.1 is inserted in the lift facility 10,
-the second counterweight segmentation 2.2 is inserted in the lift facility 10,
The second counterweight segmentation 2.2 of-mechanical connection and the first counterweight segmentation 2.1, wherein, the second counterweight segmentation 2.2 is arranged in the first counterweight segmentation, 2.1 belows and by its carrying.The installation of counterweight 2 also can go out to send completion from lift car 1 at the middle part of lift well.
The method step of back can repeat to other counterweight segmentation 2.3,2.n.
Counterweight segmentation 2.1,2.2,2.3,2.n implement from carrying ground, this means, see that from bottom to top nethermost counterweight segmentation (such as 2.3) is connected in the counterweight segmentation (such as 2.2) that is close on it.Through the structure that carries certainly need not instead to have cancelled counterweight framework or other layout, as described in open source literature ED1162048.
Counterweight segmentation 2.1,2.2 of the present invention or the like is preferably processed by the material with larger specific gravity integratedly.Particularly preferably be metal sheet, it is brought in the corresponding shape through casting or through back processing.
Particularly preferably be a kind of embodiment, wherein, bindiny mechanism 4 directly processes during plate in the cast metal.
Particularly preferably be a kind of embodiment, wherein, bindiny mechanism 4 is processed by metal sheet through laser beam cutting or high-pressure water jet cutting.
The preferred weight of so selecting counterweight segmentation one by one 2.1,2.2 or the like makes counterweight segmentation 2.1,2.2 or the like can operate simply when mounted.
Hang one by one in other words through them through counterweight segmentation 2.1,2.2,2.3,2.n arow and to arrange up and down that in series the counterweight segmentation is under the in-to-in tensile stress all the time one by one.This tensile stress produces based on the intrinsic weight of counterweight segmentation 2.1,2.2,2.3,2.n.
The counterweight 2 relatively stable and low noise ground operations that the in-to-in tensile stress causes Modularly or combines or make up.This with respect to as in the prior art be favourable to the approximate solution of inserting loosely in the counterweight framework of pouring weight.
Owing to cancelled the counterweight framework, the structure width BG of counterweight 2 can be similar to the inner width that reaches lift well 3, as such as visible in Fig. 4.
(in the vertical direction) system height of counterweight 2 also can be optimized, because need not the counterweight framework.
Because can utilize the whole inner width BS of lift well 3, required counterweight thickness is less than counterweight thickness of the prior art.
The present invention has realized the optimum utilization of existing vertical shaft cross-sectional plane (vertical shaft planar view).
Through flat especially make, the modernization that counterweight 2 is particularly suitable for little capacity weight and is applicable to existing lift facility 10.
As another advantage of the present invention, only need be used for the less different parts of counterweight 2.
Claims (10)
1. a lift facility (10); Have at least one lift car (1), counterweight (2) and have the guide rail (9) that is used to guide counterweight (2), said guide rail is arranged in the lift well (3), wherein vertically; Lift car (1) can in lift well (3), go and counterweight (2) is built into frameless counterweight as follows; Be that it comprises a plurality of counterweight segmentations (2.1,2.2), they are mutual vertically install in series under the state that assembles, and
The back to back second counterweight segmentation (2.2) is carried in the first counterweight segmentation (2.1) on top,
On the bottom surface (3.1) of the first counterweight segmentation (2.1) on top, first bindiny mechanism (4.1) is set, and
On the end face (3.2) of the back to back second counterweight segmentation (2.2), second bindiny mechanism (4.2) is set; Thereby make the back to back second counterweight segmentation (2.2) can be installed in the first counterweight segmentation (2.1) on top through the joint of first and second bindiny mechanisms (4.1,4.2); It is characterized in that; Guide rail (9) has the U-shaped profile, and counterweight (2) guides between the shank of said profile and the shank of counterweight segmentation (2.1,2.2,2.3) through said profile obtains protection.
2. lift facility according to claim 1 (10) is characterized in that, said counterweight (2) Modularly makes up and said counterweight segmentation (2.1,2.2) itself is implemented from carrying ground.
3. lift facility according to claim 1 and 2 (10) is characterized in that, said counterweight segmentation (2.1,2.2) is an one.
4. according to each described lift facility (10) in the aforementioned claim, it is characterized in that the first counterweight segmentation (2.1) on top has and is used to the fixed mechanism (6) load carrier (5) being installed or being used to install the counterweight reverse wheel.
5. according to each described lift facility (10) among the claim 1-3; It is characterized in that; Said counterweight (2) comprises connecting panel (11), and said connecting panel is as the uppermost segmentation of counterweight (2) and have and be used to the fixed mechanism (6) load carrier (5) being installed or being used to install the counterweight reverse wheel.
6. according to each described lift facility (10) in the aforementioned claim, it is characterized in that counterweight (2) comprises the connecting panel (13) of bottom, the connecting panel of said bottom (13) is carried by the nethermost counterweight segmentation (2.3) of counterweight (2).
7. according to each described lift facility (10) in the aforementioned claim; It is characterized in that; Guide rail (9) is implemented in the vertical shaft zone as follows, and promptly said guide rail (9) allows counterweight segmentation (2.1,2.2) to engage or take apart under the idle state of lift facility (10).
8. lift facility according to claim 7 (10) is characterized in that, in the vertical shaft zone of bottom, a shank of the U-shaped profile of guide rail (9) can be removed.
9. one kind is used for the method according to the counterweight (2) of the described lift facility of claim 1 to 6 (10) is installed, and has the following step:
Lift facility (10) is transferred in the predefined position, and lift car in said position (1) and the counterweight (2) that need install are arranged in the vertical shaft zone of qualification;
The first counterweight segmentation (2.1) is inserted in the lift facility (10),
The second counterweight segmentation (2.2) is inserted in the lift facility (10),
The mechanical connection second counterweight segmentation (2.2) and the first counterweight segmentation (2.1), wherein, the second counterweight segmentation (2.2) be arranged in the first counterweight segmentation (2.1) below and by the first counterweight segmentation (2.1) carry and
Counterweight segmentation (2.3,2.n) to other repeats the method step of back, wherein
Guide rail (9) has the U-shaped profile, and counterweight (2) guides between the shank of said profile and the shank of counterweight segmentation (2.1,2.2,2.3) through said profile obtains protection.
10. method according to claim 9 is characterized in that, counterweight segmentation (2.1,2.2., 2.3) is being installed before, in the vertical shaft zone of bottom, a shank of the U-shaped profile of guide rail (9) is removed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09169397 | 2009-09-03 | ||
| EP09169397.8 | 2009-09-03 | ||
| PCT/EP2010/062452 WO2011026777A1 (en) | 2009-09-03 | 2010-08-26 | Elevator system having a counterweight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102482059A true CN102482059A (en) | 2012-05-30 |
Family
ID=41343365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800391931A Pending CN102482059A (en) | 2009-09-03 | 2010-08-26 | Elevator system having a counterweight |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2473431A1 (en) |
| CN (1) | CN102482059A (en) |
| WO (1) | WO2011026777A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844754A (en) * | 2018-08-20 | 2020-02-28 | 奥的斯电梯公司 | Frameless elevator counterweight |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US206434A (en) * | 1878-07-30 | Improvement in ratcheted guides for elevators | ||
| US1814610A (en) * | 1929-05-08 | 1931-07-14 | Solomon Golub | Counterbalance weight |
| US1839127A (en) * | 1929-05-08 | 1931-12-29 | Solomon Golub | Lift device |
| JPH10250959A (en) * | 1997-03-07 | 1998-09-22 | Toshiba Elevator Eng Kk | Counterweight for rope type elevator |
| RU2138033C1 (en) * | 1997-11-27 | 1999-09-20 | Хабаровский государственный технический университет | Assembled weight |
| JP2002114468A (en) * | 2000-10-06 | 2002-04-16 | Mitsubishi Electric Corp | Balance weight of elevator |
| CN101374751A (en) * | 2004-05-19 | 2009-02-25 | 奥蒂斯电梯公司 | Weight counterbalance for hoist, ballast for the weight counterbalance and hoist equipped with the weight counterbalance |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1162048B (en) | 1961-05-05 | 1964-01-30 | Gutehoffnungshuette Sterkrade | Counterweight of a mining shaft conveyor system |
| JPS56116371U (en) * | 1980-02-02 | 1981-09-05 | ||
| JPS56116371A (en) | 1980-02-20 | 1981-09-12 | Sony Corp | Linearity corrector for horizontal deflection |
| US5294757A (en) * | 1990-07-18 | 1994-03-15 | Otis Elevator Company | Active vibration control system for an elevator, which reduces horizontal and rotational forces acting on the car |
| JP2002037565A (en) * | 2000-07-26 | 2002-02-06 | Matsushita Electric Works Ltd | Elevator device |
| JP2004075268A (en) * | 2002-08-14 | 2004-03-11 | Toshiba Elevator Co Ltd | Elevator guiding device |
-
2010
- 2010-08-26 EP EP10745263A patent/EP2473431A1/en not_active Withdrawn
- 2010-08-26 CN CN2010800391931A patent/CN102482059A/en active Pending
- 2010-08-26 WO PCT/EP2010/062452 patent/WO2011026777A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US206434A (en) * | 1878-07-30 | Improvement in ratcheted guides for elevators | ||
| US1814610A (en) * | 1929-05-08 | 1931-07-14 | Solomon Golub | Counterbalance weight |
| US1839127A (en) * | 1929-05-08 | 1931-12-29 | Solomon Golub | Lift device |
| JPH10250959A (en) * | 1997-03-07 | 1998-09-22 | Toshiba Elevator Eng Kk | Counterweight for rope type elevator |
| RU2138033C1 (en) * | 1997-11-27 | 1999-09-20 | Хабаровский государственный технический университет | Assembled weight |
| JP2002114468A (en) * | 2000-10-06 | 2002-04-16 | Mitsubishi Electric Corp | Balance weight of elevator |
| CN101374751A (en) * | 2004-05-19 | 2009-02-25 | 奥蒂斯电梯公司 | Weight counterbalance for hoist, ballast for the weight counterbalance and hoist equipped with the weight counterbalance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844754A (en) * | 2018-08-20 | 2020-02-28 | 奥的斯电梯公司 | Frameless elevator counterweight |
| CN110844754B (en) * | 2018-08-20 | 2022-07-08 | 奥的斯电梯公司 | Frameless elevator counterweight |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2473431A1 (en) | 2012-07-11 |
| WO2011026777A1 (en) | 2011-03-10 |
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